Geometry

10:44
The Napkin Ring Problem
/ 33 viewsBrain Candy Live FALL TOUR: http://www.braincandylive.com/ticketsThe Curiosity Box: https://www.curiositybox.com/LINKS TO LEARN MORE BELOW!my twitter: http://www.twitter.com/tweetsauceAdam and I (but mainly Adam) making a kendama: https://www.youtube.com/

16:54
Teacher Delivers Remote Virtual Reality Math Lesson on Angles using Half Life: Alyx
/ 76 viewsReview of Angle Vocabulary for Homeschooling Week because I have to teach today, but Half Life Alyx just came out. Want to support my classroom? http://www.donorschoose.org/charlescoomber Twitter – @charlescoomber

02:41
SYMMETRY
/ 96 viewsSymmetry is one of five shorts featured in the film, "Mathematica Peep Shows." The collection was made by Charles and Ray Eames for the IBM Mathematica Exhibit which opened in 1961. It is about the mathematical ordering of form and the symmetrical propert

16:38
Superhero Triangles  Numberphile
/ 75 viewsHeronian triangles and other fascinating things, featuring Dr James Grime.Get your Superhero Triangle TShirt and other stuff: http://bit.ly/Super_TriMore links & stuff in full description below More videos with Dr Grime: http://bit.ly/grimevideosDr James

05:06
The Pizza Theorem
/ 130 viewsWatch my newest video, "The Game You Win By Losing (Parrondo's Paradox)": https://youtu.be/PpvboBJEozMGet Vsauce's favorite science and math toys delivered to your door!https://www.curiositybox.com/National Pizza Day is Saturday, February 9!*** LINKS ***T

15:22
Squaring a Doughnut
/ 122 views***LINKS TO LEARN MORE BELOW***Numberphile's Video About Squared Squareshttps://www.youtube.com/watch?v=NoRjwZomUK0 Torus Gameshttp://www.geometrygames.org/TorusGames/index.html.en https://levsblog.quora.com/TheTopologyofPacmanhttp://www.squaring.net/s

18:38
Mbius Bagels
/ 235 views'Tis the season to cut bagels into interlocked halves!! LEARN MORE:George Hart's article: https://www.georgehart.com/bagel/bagel.htmlGeorge Hart's video: https://www.youtube.com/watch?v=dN8AwGUaqDAEugenia Cheng's video: https://www.youtube.com/watch?v=NRv

15:30
The Mandelbrot Set
/ 208 viewsI will send my brain food right to your door: http://www.curiositybox.com Twitter: http://twitter.com/DoOnlineNowGuysInstagram: http://instagr.am/doonlinenowguysVsauce PO Box: PO Box 33168 L.A. CA 90033***Click "SHOW MORE" For Links*** Mandelbrot Zoomhttp

18:59
The Four Color Theorem  Coloring a Planar Graph
/ 121 viewsTrain your problem solving skills today with SkillShare: https://skl.sh/upandatom3 Check out the video we did over on Willie's Channel! https://youtu.be/jwQlULjESTs Subscribe to Willie's Channel KhAnubis! https://www.youtube.com/user/tobirates The Four Co

16:07
Terrific Toothpick Patterns  Numberphile
/ 136 viewsFun with toothpicks. Featuring Neil Sloane. More links & stuff in full description below ↓↓↓ Neil Sloane is the founder of the OnLine Encyclopedia of Integer Sequences: https://oeis.org Play with the toothpick simulator: http://oeis.org/A139250/a139250.a

07:26
Incredible Rolling Objects which aren't Spheres!
/ 335 viewsThese strange solids roll in interesting and unexpected ways! Join me as we explore these curious geometries the Wobbler, Oloid and Steinmetz Solid. 3D Print your own with the files here  https://gumroad.com/products/QGsID/ Get your own stainless steel O

03:43
Can you solve the unstoppable blob riddle?  Dan Finkel
/ 289 viewsA shooting star crashes onto Earth and unleashes a hideous, rampaging blob. Can you stop it from destroying the planet?  A shooting star crashes onto Earth and a hideous blob emerges. It creeps and leaps, it glides and slides. It’s also unstoppabl

04:54
The problem in Good Will Hunting  Numberphile
/ 165 viewsWe now have a Tumblr: Tumblr: http://numberphile.tumblr.com This paper on ebay: http://www.ebay.co.uk/itm/221197137799? More links & stuff in full description below ↓↓↓ Just how hard was the second problem cracked by Will in Good Will H

06:02
The Perfect Stack of Maltesers
/ 196 viewsDr Eugenia Cheng, Senior Lecturer in Mathematics from the University of Sheffield, discusses the mathematics behind the perfect stack of Maltesers http://www.sheffield.ac.uk/maths

08:01
Surface Area to Volume Ratios  Christmas Lectures with Philip Morrison
/ 163 viewsThe mathematicians of Lilliput assumed that Gulliver would need 1728 times as much food as an individual Lilliput. Philip Morrison shows why this is not true, using surface area to volume ratios. Watch the full lecture: http://www.rigb.org/christmaslectu

04:32
Can you solve the time travel riddle?  Dan Finkel
/ 338 viewsPractice more problemsolving at https://brilliant.org/TedEd/ Solution to bonus riddle: https://brilliant.org/TedEdTimeTravel/ Your professor has accidentally stepped through a time portal in his physics lab. You’ve got just a minute to jump through befor

04:29
Can you solve the secret werewolf riddle?  Dan Finkel
/ 679 viewsPractice more problemsolving at https://brilliant.org/TedEd/ Signup to receive the bonus riddle's solution: https://brilliant.org/TedEdWerewolf/ You’re on the trail of a werewolf that’s been terrorizing your town. After months of detective work, you’ve n

04:33
Fractals: The Geometry of Chaos  Christmas Lectures with Ian Stewart
/ 218 viewsUsing a simple set of mathematical rules, a very intricate geometry can be created in the form of fractals. The Sierpinski triangle is a famous example. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rig

02:00
Maps, States & Borders
/ 282 viewsDeane challenges Rob with a mathematical problem concerning maps, states and borders. SUBSCRIBE NOW http://www.youtube.com/subscription_center?add_user=CuriosityShow CONNECT WITH CURIOSITY Facebook ➤ http://www.facebook.com/CuriosityShow Twitter ➤ https:/

04:39
The mysterious isochronous curve
/ 287 viewsIt's a big name, but the isochronous curve deserves it. Rob shows you how to draw one easily and then how to investigate its extraordinary properties.

01:51
How to cut a pipe squarely
/ 246 viewsCutting a section of pipe or cylindrical rod is tricky  the cut goes sideways or doesn't meet itself, but Rob shows a simple way to cut a pipe squarely every time.

01:41
Measuring Volume with a Ruler
/ 391 viewsDeane demonstrates a method for measuring the volume of an irregular container. SUBSCRIBE NOW http://www.youtube.com/subscription_center?add_user=CuriosityShow CONNECT WITH CURIOSITY Facebook ➤ http://www.facebook.com/CuriosityShow Twitter ➤ https://twitt

05:39
Can You Solve A 5th Grade Problem From China? Find The Area Of ABCD
/ 446 viewsThanks to Eric from Miami for suggesting this problem and sending a solution! The diagram shows a quadrilateral ABCD with the values for some angles and the length of AB. Can you figure out the area of ABCD? Subscribe: https://www.youtube.com/user/MindYou

14:53
THE SCUTOID: did scientists discover a new shape?
/ 227 viewsRead the Nature paper for yourself: "Scutoids are a geometrical solution to threedimensional packing of epithelia" https://www.nature.com/articles/s41467018053761 Thanks to Laura and Clara for helping me with the video! You can download Laura's model

04:22
How to Determine the Area of a Triangle Based on Coordinates of Its Vertices & Determinants
/ 304 viewsHow to Determine the Area of a Triangle Based on Coordinates of Its Vertices & Determinants. Part of the series: Finding and Using the Area of a Triangle. You can use the coordinates of a triangle's vertices and determines, along with a very specific rule

01:32
How to Solve for the Height of Cylinders
/ 429 viewsHow to Solve for the Height of Cylinders. Part of the series: Algebra Tips. Solving for the height of cylinders can be accomplished in just a few moments with the right equation. Learn how to solve for the height of cylinders with help from an experienced

01:14
How to Multiply to Get the Area of a Parallelogram
/ 459 viewsHow to Multiply to Get the Area of a Parallelogram. Part of the series: Perimeter, Area and Decimals. Multiplication is one way you can find the area of a parallelogram pretty easily. Multiply to get the area of a parallelogram with help from a longtime m

02:06
Types of Angles, Figures & Shapes
/ 406 viewsTypes of Angles, Figures & Shapes. Part of the series: Geometry Tips. many different types of angles, figures and shapes make up math in general as well as geometry. Learn about the types of angles, figures and shapes in geometry with help from a longtime

03:21
Can You Solve A Puzzle That Fooled Richard Feynman?
/ 310 viewsWhat is the radius of the circle, in simplest terms involving a, b, and c? I read that even the great mind Richard Feynman made a mistake. Watch the video to learn the common mistake and what the correct answer is. Source Feynman story http://web.media.mi

05:48
What Is The Area? "You Should Be Able To Solve This"
/ 190 viewsThanks to Reio in Romania for emailing me this fun problem! What is the area? This puzzle was shared with the tagline "you should be able to solve this." Solution to 5th grade Chinese challenge problem https://youtu.be/OuJQaxZvlYs My blog post for this vi

09:15
5Sided Square  Numberphile
/ 330 viewsCheck our sponsor The Great Courses Plus (free trial): http://ow.ly/j5cB30hIvm2 This video features Cliff Stoll. More links & stuff in full description below ↓↓↓ More Cliff Stoll videos: http://bit.ly/Cliff_Videos Buy a Klein Bottle fro

04:46
Can you solve the Mondrian squares riddle?  Gordon Hamilton
/ 397 viewsPractice more problemsolving at https://brilliant.org/TedEd/ Dutch artist Piet Mondrian’s abstract, rectangular paintings inspired mathematicians to create a twofold challenge. Can you solve the puzzle and get to the lowest score possible? Gordon

06:13
Calculating the circumference of the Earth in 200 BC
/ 226 viewsIn one of the dopest displays of critical thinking in history, Eratosthenes estimated the circumference of the Earth. All he had was a pole, the sun, knowledge of a famous well in Egypt, and potentially money to pay someone to walk the distance between tw

02:43
The Man Teaching Math Lessons in the Sky
/ 167 viewsWinfred Randolph Lowe, aka, “Randy the Kite Man,” is a retired math teacher taking geometry to new heights. For the past 20 years, Winfred has spent his free time flying kites. Now he’s combining his two favorite pastimes to teach the fundamentals of geom

02:04
NonEuclidean Geometry of a Sphere  Christmas Lectures with Philip Morrison
/ 210 viewsAccording to Euclidean geometry the angles of a triangle add up to 180 degrees. Philip Morrison shows an example of where this isn't true, and nonEuclidean geometry applies. Watch the full lecture: http://www.rigb.org/christmaslectures/watch/1968/gulliv

03:24
Round Peg in a Square Hole  Numberphile
/ 313 viewsFeaturing Tadashi Tokieda  more Tadashi videos at: http://bit.ly/tadashi_vids More links & stuff in full description below ↓↓↓ Tadashi Tokieda is a Professor of Mathematics at Stanford University (though this was filmed when he was at Cambridge, in the U

06:39
Pythagoras Theorem Explained  Mathemagic with Bawa
/ 278 viewshttp://www.youtube.com/watch?v=49_TJymgXgM  Mathemagic  (a+b)²=a²+2ab+b²  But Why? One of the elementary formula in high school mathematics, most of us know this formula. But do we actually know why? In this video Khurshed Batliwala, fon

01:20
Proof Without Words: The Circle
/ 224 viewsProve πR² using only beads and a ruler! I first saw this proof in an article by Russell Jay Hendel, Dowling College: http://bit.ly/LQlwQw minutephysics is now on Google+  http://bit.ly/qzEwc6 And facebook  http://facebook.com/minutephysics And twitter 

06:11
Hexaflexaflakes
/ 260 viewsI hope you enjoy this fun holiday craft! This video is supported by viewers like you! Thanks especially to: Caleb Wright, Albert Wenger, CHLOE, Pat Devlin, Jack Heidrick, Al3x, David Perryman, Wish Society, Carol Ghiorsi Hart, Chris Pierik, Andrea Di Biag

02:14
Visualizing the 600Cell
/ 241 viewsMathematician/geometer Dugan Hammock of Quantum Gravity Research shows us a visualization of the 4dimensional 600Cell projected to 3D object (further projected, technically, to 2D on his computer screen.) The 600Cell is a 4dimensional shape made of 60

05:17
How many ways are there to prove the Pythagorean theorem?  Betty Fei
/ 336 viewsCheck out our Patreon page: https://www.patreon.com/teded View full lesson: https://ed.ted.com/lessons/howmanywaysaretheretoprovethepythagoreantheorembettyfei What do Euclid, 12yearold Einstein, and American President James Garfield have in c

04:17
How volume changes from changing dimensions
/ 361 viewsHow volume changes from changing dimensions

03:41
Example finding distance with Pythagorean theorem
/ 373 viewsExample finding distance with Pythagorean theorem

22:41
Calculating the optimal sphere packing density: with oranges
/ 307 viewsCheck out the corresponding video I made with Steve Mould for his channel. https://youtu.be/O3RsDIWB7s0 Thomas Hales’s proof of the Kepler Conjecture. http://annals.math.princeton.edu/wpcontent/uploads/annalsv162n3p01.pdf The Kepler Conjecture on wiki

12:55 Popular
Math Antics  The Pythagorean Theorem
/ 873 viewsLearn more at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!
Featured 
13:00
The Moving Sofa Problem  Numberphile
/ 297 viewsFeaturing Dan Romik from UC Davis. More footage from this interview soon on Numberphile2. Dan's comprehensive page on this topic: http://bit.ly/movingsofa Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRIN

12:33
Pascal's Triangle  Numberphile
/ 310 viewsJust a few fun properties of Pascal's Triangle  discussed by Casandra Monroe, undergraduate math major at Princeton University. Filmed during the MSRIUP summer program. Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): htt

04:32
Math Word problems  Solving triangles
/ 435 viewsBecome an expert in solving math word problems! In this problem you will learn how to use triangles to solve the height of a building. A man steps back 50 feet which the angle to the top of the building change 15 degrees. Using this information find the h

05:04
Area of a Triangle  Fun challenging math problem
/ 525 viewsCan you solve the area of a triangle given points X and Y. This is not a basic problem, but it is a fun and challenging math problem. See if you are smart enough to find the area of a triangle for yourself. My name is Chris and my passion is to teach math

04:55
Solve the right triangle  Trigonometry Brain Teaser
/ 611 viewsA square is inside of a right triangle. The length of each side of the triangle is 345. Given this information what are the dimensions of the square? Can you solve this right triangle? My name is Chris and my passion is to teach math. Learning should ne

25:57
The Brachistochrone
/ 429 viewsBRAIN CANDY LIVE TICKETS: http://www.braincandylive.com/tickets Links to sources and to learn more below! MY TWITTER: http://www.twitter.com/tweetsauce MY INSTAGRAM: http://www.instagram.com/electricpants THE CURIOSITY BOX: https://www.curiositybox.com/ S

01:20
How Giant Lava Caves on Earth May Help Us Survive on Mars  National Geographic
/ 329 viewsThe first humans to arrive on Mars will experience lifethreatening conditions including intense radiation, dust storms, and extreme temperatures. Researchers are mapping lava tubes at the Craters of the Moon National Monument in Idaho in hopes that their

05:24
Math Challenge  Shrinking Pool Problem
/ 527 viewsThink you can solve this math challenge? Every time a boy jumps into the pool it shrinks by a certain amount. Thy boy jumps into the pool 3 times. You must find the original length of the pool My name is Chris and my passion is to teach math. Learning sho

01:32
Easy Puzzle  But can you solve it?
/ 325 viewsSolve this puzzle by cutting the piece of wood into two pieces. Both pieces must fit exactly into the hole. Can you solve this easy puzzle? Watch the video and find out. My name is Chris and my passion is to teach math. Learning should never be a struggle

31:51
Geometry: An Interactive Journey to Mastery  The Great Courses
/ 386 viewshttps://www.thegreatcoursesplus.com/geometryaninteractivejourneytomastery?utm_source=US_SocialMedia&utm_medium=SocialMediaEditorialYoutube&utm_campaign=138569 Like other math fields, geometry teaches us how to think. It leads students to uncover new

04:13
Can You Solve This Grade 12 Geometry Problem From Australia? The Marshmallow Chocolate Puzzle
/ 373 viewsA marshmallow has the shape of a cylinder with diameter 5 and height 3. A dessert is made with 24 marshmallows: there are two stacked layers of marshmallows, and each layer has 3 rows of 4 marshmallows. The gaps between the marshmallows are filled with ch

09:11
Can You Solve The Rectangle Ratio Puzzle? The Surprising Answer
/ 458 viewsStart with a unit square (a rectangle with both sides equal to 1, call it R1). Attach a rectangle of area 1 to its right side, then attach a rectangle of area 1 to its top. The border of this new shape is another rectangle, call it R2. We can repeat the p

05:57
Can You Solve This 6th Grade Geometry Problem From Singapore? The Area Of A "Claw"
/ 639 viewsThis problem was given to Primary 6 (age 1112) students in Singapore. What is the area of the shaded region in the video, which consists of the region bounded by 4 quarter circles in a 3x3 grid of squares, and each square has a side length of 4? The shad

09:03
SpaceFilling Curves  Numberphile
/ 309 viewsHenry Segerman shows us some 3Dprinted spacefilling curves, including the Hilbert Curve and Dragon Curve. Check Henry's book about 3D printing math: http://amzn.to/2cWhY3R More Henry videos: http://bit.ly/Segerman_Videos Dragon Curve videos: http://bit.

06:13
Aluminium  The Material That Changed The World
/ 289 viewsThanks to the vlogbrothers for sponsoring this video. Have been following their work for years, it feels great to be supported by my role models! Thank you to my patreon supporters: Adam Flohr, darth patron, Zoltan Gramantik, Josh Levent, Henning Basma. T

08:05
Can You Solve The Hardest Easy Geometry Problem?
/ 561 viewsIn the figure, what is the value of angle x? This problem is known as Langley's Adventitious Angles. It is also known as the hardest easy geometry problem because it can be solved by elementary methods but it is notoriously difficult to work out. Can you

12:36 Popular
Math Antics  Volume
/ 1,051 viewsLearn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!
Featured 
06:31
Proof  Sum of Measures of Angles in a Triangle are 180
/ 437 viewsProof that the sum of the measures of the angles in a triangle are 180

04:29
Mathematical Present Wrapping
/ 354 viewsMathematician Katie Steckles takes you through some mathematically satisfying ways to wrap presents using paper.
Featured 
03:36
Finding Radius And Diameter From Circumference
/ 322 viewsFinding radius and diameter from circumference

09:26
Informal Argument For The Area Of Circle Formula
/ 342 viewsInformal argument for the area of circle formula

08:41
Proving Radius Is Perpendicular To Tangent Line
/ 318 viewsProving radius is perpendicular to tangent line

03:56
Segments Tangent To Circle From Outside Point Congruent
/ 305 viewsSegments tangent to circle from outside point congruent

04:58
Example Showing Supplementary Oppositie Angles In Inscribed Quadrilateral
/ 415 viewsExample showing supplementary oppositie angles in inscribed quadrilateral

03:56
Proving The Opposite Angles Of Inscribed Quadrilateral Are Supplementary
/ 693 viewsProving the opposite angles of inscribed quadrilateral are supplementary

01:35
Seeing Circle Similarity Through Translation And Dilation
/ 313 viewsSeeing circle similarity through translation and dilation

05:49
Solving For Unknown Angle
/ 282 viewsSolving for unknown angle. One method using an inscribed angle intercepting a diameter of a circle.

06:35
Bisecting Yin And Yang  Brain Teaser
/ 471 viewsCan you bisect yin and yang using a straight line? Find the solution to this brain teaser in this video. I also have a bunch of other fun brain teasers as well. Heaven and hell  Brain Teaser https://www.youtube.com/watch?v=YOgKI0HWCnA Two burning ropes 

03:59
Volume Word Problems — Basic Example  Math  New SAT  Khan Academy
/ 373 viewsWatch Sal work through a basic Volume word problem. Watch the next lesson: https://www.khanacademy.org/testprep/newsat/newsatmath/newsatadditionaltopicsmath/v/satmaths1harder?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the previous

05:09
Volume Word Problems — Harder Example  Math  New SAT  Khan Academy
/ 339 viewsWatch Sal work through a harder Volume word problem. Watch the next lesson: https://www.khanacademy.org/testprep/newsat/newsatmath/newsatadditionaltopicsmath/v/satmaths2easier?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the previou

03:52
Right Triangle Word Problems — Basic Example  Math  New SAT  Khan Academy
/ 368 viewsWatch Sal work through a basic Right triangle word problem. Watch the next lesson: https://www.khanacademy.org/testprep/newsat/newsatmath/newsatadditionaltopicsmath/v/satmaths2harder?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the

05:33
Right Triangle Word Problems — Harder Example  Math  New SAT  Khan Academy
/ 376 viewsWatch Sal work through a harder Right triangle word problem. Watch the next lesson: https://www.khanacademy.org/testprep/newsat/newsatmath/newsatadditionaltopicsmath/v/satmaths6easier?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the

03:52
Angles, Arc Lengths, And Trig Functions — Basic Example  Math  New SAT  Khan Academy
/ 358 viewsWatch Sal work through a basic Angles, arc lengths, and trig functions problem. Watch the next lesson: https://www.khanacademy.org/testprep/newsat/newsatmath/newsatadditionaltopicsmath/v/satmaths4harder?utm_source=YT&utm_medium=Desc&utm_campaig

03:45
Angles, Arc Lengths, And Trig Functions — Harder Example  Math  New SAT  Khan Academy
/ 378 viewsWatch Sal work through a harder Angles, arc lengths, and trig functions problem. Watch the next lesson: https://www.khanacademy.org/testprep/newsat/newsatmath/newsatadditionaltopicsmath/v/satmaths5easier?utm_source=YT&utm_medium=Desc&utm_campai

04:28
Circle Theorems — Basic Example  Math  New SAT  Khan Academy
/ 446 viewsWatch Sal work through a basic Circle theorems problem. Watch the next lesson: https://www.khanacademy.org/testprep/newsat/newsatmath/newsatadditionaltopicsmath/v/satmaths5harder?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the prev

04:10
Circle Theorems — Harder Example  Math  New SAT  Khan Academy
/ 444 viewsWatch Sal work through a harder Circle theorems problem. Watch the next lesson: https://www.khanacademy.org/testprep/newsat/newsatmath/newsatadditionaltopicsmath/v/satmaths8easier?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the pre

04:19
Congruence And Similarity — Basic Example  Math  New SAT  Khan Academy
/ 366 viewsWatch Sal work through a basic Congruence and similarity problem. Watch the next lesson: https://www.khanacademy.org/testprep/newsat/newsatmath/newsatadditionaltopicsmath/v/satmaths6harder?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Misse

03:18
Congruence And Similarity — Harder Example  Math  New SAT  Khan Academy
/ 320 viewsWatch Sal work through a harder Congruence and similarity problem. Watch the next lesson: https://www.khanacademy.org/testprep/newsat/newsatmath/newsatadditionaltopicsmath/v/satmaths7easier?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Miss

08:17
Right Triangle Geometry — Basic Example  Math  New SAT  Khan Academy
/ 380 viewsWatch Sal work through a basic Right triangle geometry problem. Watch the next lesson: https://www.khanacademy.org/testprep/newsat/newsatmath/newsatadditionaltopicsmath/v/satmaths7harder?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed

03:43
Right Triangle Geometry — Harder Example  Math  New SAT  Khan Academy
/ 298 viewsWatch Sal work through a harder Right triangle geometry problem. Watch the next lesson: https://www.khanacademy.org/testprep/newsat/newsatmath/newsatadditionaltopicsmath/v/satmaths4easier?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed

01:53
Circle Equations — Basic Example  Math  New SAT  Khan Academy
/ 405 viewsWatch Sal work through a basic Circle equations problem. Watch the next lesson: https://www.khanacademy.org/testprep/newsat/newsatmath/newsatadditionaltopicsmath/v/satmaths8harder?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the pre

02:49
Circle Equations — Harder Example  Math  New SAT  Khan Academy
/ 331 viewsWatch Sal work through a harder Circle equations problem. Watch the next lesson: https://www.khanacademy.org/testprep/newsat/newsatmath/newsatadditionaltopicsmath/v/satmaths3easier?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the pr

05:02
Positive And Negative Slope  Algebra I  Khan Academy
/ 363 viewsPositive and negative slope Watch the next lesson: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/slope/v/similartrianglestoprovethattheslopeisconstantforaline?utm_source=YT&utm_medium=Desc&utm_campaign

02:34
Converting From Standard Form To Slopeintercept Form  Algebra I  Khan Academy
/ 482 viewsStandard form to slopeintercept form Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/standardform/e/slopefromanequationinstandardform?utm_source=Y

02:35
Interpreting Linear Formulas Example 2  Algebra I  Khan Academy
/ 306 viewsLinear equation for file transfer Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/interpreting_linear_functions/e/interpretingfeaturesoflinearfunction

05:30
Graphing Linear Functions Example 1  Algebra I  Khan Academy
/ 324 viewsLearn how graph a linear function. This video gives an example of graphing fuel consumption as a function of distance. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintro

03:12
Graphing Linear Functions Example 2  Algebra I  Khan Academy
/ 352 viewsGraphing equation for filling pool Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/linearfunctionsmodeling/e/graphinglinearfunctionswordproblems?utm

01:07
How To Match Function Input To Output Given The Graph (example)  Algebra I  Khan Academy
/ 320 viewsSal finds the input value for which g(x)=2 given the graph of g. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebrafunctions/functioninputsandoutputs/e/functions_matching_inputs_outputs?utm_so

01:49
How To Find Two Function Inputs With The Same Output Given Graph (example)  Khan Academy
/ 351 viewsSal finds the input value other than 5 for which f(x)=f(5), given the graph of f. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebrafunctions/functioninputsandoutputs/e/functions_matching_inp

05:09
Converting From Slopeintercept To Standard Form  Algebra I  Khan Academy
/ 452 viewsConverting from slopeintercept to standard form Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/standardform/e/converting_between_slope_intercept_and_st

07:23
Introduction To Transformations  Transformations  Geometry  Khan Academy
/ 392 viewsIntroduction to transformations Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/rigidtransformationsintro/e/performingtranslationsonthecoordinateplane?utm_source=YT&utm_medium=De

01:37
Translation Example  Transformations  Geometry  Khan Academy
/ 415 viewsTranslation example Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/rigidtransformationsintro/e/performingtranslationsonthecoordinateplane?utm_source=YT&utm_medium=Desc&utm_campa

01:25
Using Rotation Widget  Transformations  Geometry  Khan Academy
/ 383 viewsUsing rotation widget Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/rigidtransformationsintro/e/performingrotationsonthecoordinateplane?utm_source=YT&utm_medium=Desc&utm_campai

01:48
Using Reflection Tool  Transformations  Geometry  Khan Academy
/ 513 viewsUsing reflection tool Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/rigidtransformationsintro/e/performingreflectionsonthecoordinateplane?utm_source=YT&utm_medium=Desc&utm_camp

01:32
Formal Translation Tool Example  Transformations  Geometry  Khan Academy
/ 425 viewsFormal translation tool example Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hsgeotranslations/e/definingtranslations?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the

01:55
Drawing Image Of Translation  Transformations  Geometry  Khan Academy
/ 469 viewsPractice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hsgeotranslations/e/translations?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson: https://www.khanacademy.org

02:46
Defining Rotation Example  Transformations  Geometry  Khan Academy
/ 434 viewsDefining rotation example Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hsgeorotations/e/definingrotations?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson

05:41
Points On Line Of Reflection  Transformations  Geometry  Khan Academy
/ 405 viewsPoints on line of reflection Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hsgeoreflections/e/definingreflections?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next

07:19
Reflecting Segments Over Line  Transformations  Geometry  Khan Academy
/ 384 viewsReflecting segments over line Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hsgeoreflections/e/reflections1?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesso

02:28
Drawing Line Of Reflection  Transformations  Geometry  Khan Academy
/ 452 viewsDrawing line of reflection Watch the next lesson: https://www.khanacademy.org/math/geometry/transformations/hsgeoreflections/v/determiningthelineofreflection?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Missed the previous lesson? https://www

10:32
Rotating About Arbitrary Point  Transformations  Geometry  Khan Academy
/ 427 viewsRotating about arbitrary point Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hsgeorotations/e/rotations2?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson:

08:13
Points After Rotation  Transformations  Geometry  Khan Academy
/ 412 viewsPoints after rotation Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hsgeorotations/e/rotations1?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson: https://w

04:50
The Mathematical Secrets Of Pascal’s Triangle  Wajdi Mohamed Ratemi
/ 396 viewsView full lesson: http://ed.ted.com/lessons/themathematicalsecretsofpascalstrianglewajdimohamedratemi Pascal’s triangle, which at first may just look like a neatly arranged stack of numbers, is actually a mathematical treasure trove. But what abo
Featured 
03:47
Example Finding Area With Fractional Sides
/ 434 viewsExample finding area with fractional sides

07:02
Intuition For Area With Fractional Side Lengths
/ 486 viewsIntuition for area with fractional side lengths
Featured 
02:57
Intuition For Area Of A Parallelogram
/ 347 viewsIntuition for area of a parallelogram
Featured 
03:51
Dimensions Of Rectangle From Coordinates Example
/ 340 viewsDimensions of rectangle from coordinates example

02:41
Finding Coordinates Of Missing Vertex Example
/ 533 viewsFinding coordinates of missing vertex example

02:08
Area Of Parallelogram On Coordinate Plane
/ 345 viewsArea of parallelogram on coordinate plane

57:34
Topology, Geometry And Life In Three Dimensions
/ 415 viewsIf you imagine a three dimensional maze from which there is no escape, how can you map it? Is there a way to describe what all possible mazes look like, and how do mathematicians set about investigating them? Subscribe for regular science videos: http://b

07:32
Examples Interpreting Graphs Of Proportional Relationships
/ 479 viewsExamples interpreting graphs of proportional relationships

05:56
Intervals When Function Is Increasing, Decreasing, Postive Or Negative
/ 397 viewsIntervals when function is increasing, decreasing, postive or negative

07:43
How To Trisect An Angle With Origami  Numberphile
/ 427 viewsZsuzsanna Dancso trisects an angle using origami  follows on from this video about Euclidean geometry: http://youtu.be/6Lm9EHhbJAY Special thanks to the Patreon supporters listed below: Herschal Sanders (from Susan) Lê OK Merli Alex Bozzi Thomas J

16:51
Euclid's Big Problem  Numberphile
/ 539 viewsTrisecting angles and calculating cube roots was a big problem for Euclid and his cohorts. Discussed by Zsuzsanna Dancso at MSRI. TRISECT WITH ORIGAMI: http://youtu.be/SL2lYcggGpc CIRCLE THE SQUARE: http://youtu.be/CMP9a2J4Bqw NUMBERPHILE Website: http://

02:59 Popular
Arc Length As Fraction Of Circumference
/ 782 viewsArc length as fraction of circumference More free lessons at: http://www.khanacademy.org/video?v=XFI7GK4Nvs

05:35
Another Example Using Compass And Straightedge For Tangent Line
/ 474 viewsAnother example using compass and straightedge for tangent line

05:50
Constructing A Tangent Line Using Compass And Straightedge
/ 425 viewsConstructing a tangent line using compass and straightedge

07:56 Popular
Math Antics  Circles, Circumference And Area
/ 766 viewsLearn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!
Featured 
07:58
Math Antics  Circles, What Is PI?
/ 691 viewsLearn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!
Featured 
10:27 Popular
Math Antics  Area
/ 1,775 viewsLearn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!
Featured 
07:29
Math Antics  Perimeter
/ 672 viewsLearn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

09:50 Popular
Math Antics  Quadrilaterals
/ 842 viewsLearn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

07:40 Popular
Math Antics  Triangles
/ 810 viewsLearn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

07:27 Popular
Math Antics  Polygons
/ 762 viewsLearn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

09:17
Math Antics  Angles&Degrees
/ 650 viewsLearn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

07:46
Math Antics  Angle Basics
/ 609 viewsLearn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

07:54
Math Antics  Points, Lines,&Planes
/ 556 viewsLearn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

08:50
Visual Pythagorean Theorem Proof
/ 430 viewsVisual Pythagorean Theorem Proof  some basic geometry required

06:41
Midpoint Formula
/ 366 viewsMidpoint Formula More free lessons at: http://www.khanacademy.org/video?v=Ez_RwV9WVo

13:03
Pythagorean Theorem
/ 399 viewsPythagorean Theorem More free lessons at: http://www.khanacademy.org/video?v=AEIzy1kNRqo

03:00
Pythagorean Theorem 3
/ 354 viewsU07_L2_T1_we3 Pythagorean Theorem 3 More free lessons at: http://www.khanacademy.org/video?v=T0IOrRETWhI Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

04:17
Pythagorean Theorem 2
/ 405 viewsU07_L2_T1_we2 Pythagorean Theorem 2 More free lessons at: http://www.khanacademy.org/video?v=O64YFlX1_aI Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

04:32
Pythagorean Theorem 1
/ 547 viewsU07_L2_T1_we1 Pythagorean Theorem 1 More free lessons at: http://www.khanacademy.org/video?v=JVrkLIcA2qw Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

03:29
Perpendicular Lines
/ 443 viewsU04_L2_T2_we1 : Perpendicular Lines More free lessons at: http://www.khanacademy.org/video?v=0671cRNjeKI Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

02:43
Parallel lines 3
/ 336 viewsU04_L2_T1_we3 : Parallel lines 3 More free lessons at: http://www.khanacademy.org/video?v=y5yNi08cr6I Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

03:03
Parallel Lines 2
/ 347 viewsU04_L2_T1_we2 : Parallel Lines 2 More free lessons at: http://www.khanacademy.org/video?v=lOWXZFP8Vuc Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

03:49
Parallel Lines
/ 493 viewsU04_L2_T1_we1 : Parallel Lines More free lessons at: http://www.khanacademy.org/video?v=TaCweuimis Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

07:57
Pointslope and standard form
/ 354 viewsU04_L1_T4_we2 : Pointslope and standard form More free lessons at: http://www.khanacademy.org/video?v=6Fu2T_RSGM Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

05:07
Converting to slopeintercept form
/ 532 viewsU04_L1_T4_we1 : Converting to slopeintercept form More free lessons at: http://www.khanacademy.org/video?v=V6Xynlqc_tc Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

03:02
Graphing a line in slope intercept form
/ 333 viewsU04_L1_T3_we1 : Graphing a line in slope intercept form More free lessons at: http://www.khanacademy.org/video?v=uk7gS3cZVp4 Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

03:25
X and Y intercepts 2
/ 317 viewsU04_L1_T2_we2 : X and Y intercepts 2 More free lessons at: http://www.khanacademy.org/video?v=405boztgZig Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

04:08
X and Y intercepts
/ 341 viewsU04_L1_T2_we1 : X and Y intercepts More free lessons at: http://www.khanacademy.org/video?v=xGmef7lFc5w Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

04:03
Slope Example
/ 352 viewsU04_L1_T1_we2 : Slope Example More free lessons at: http://www.khanacademy.org/video?v=jTCZfMMcHBo Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

04:40
Slope of a line
/ 330 viewsU04_L1_T1_we1 : Slope of a line More free lessons at: http://www.khanacademy.org/video?v=R948Tsyq4vA Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

02:35
Volume of a Sphere
/ 379 viewsu07_l3_t1_we2 Volume of a Sphere More free lessons at: http://www.khanacademy.org/video?v=IelS2vg7JO8 Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

03:03
Perimeter and Area of a NonStandard Polygon
/ 467 viewsu07_l2_t2_we3 Perimeter and Area of a NonStandard Polygon More free lessons at: http://www.khanacademy.org/video?v=7S1MLJOG5A Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

01:20
Perimeter of a Polygon
/ 413 viewsu07_l2_t2_we1 Perimeter of a Polygon More free lessons at: http://www.khanacademy.org/video?v=5ZCKr4wTQvI Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

01:42
Finding Missing Angles
/ 480 viewsu07_l1_t2_we3 Finding Missing Angles Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

02:36
Identifying Complementary and Supplementary Angles
/ 348 viewsu07_l1_t2_we2 Identifying Complementary and Supplementary Angles Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

03:35
Identifying Parallel and Perpendicular Lines
/ 517 viewsu07_l1_t2_we1 Identifying Parallel and Perpendicular Lines More free lessons at: http://www.khanacademy.org/video?v=aq_XL6FrmGs Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

06:35
Acute Obtuse and Right Angles
/ 490 viewsu07_l1_t1_we2 Acute Obtuse and Right Angles Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

05:41
Identifying Rays
/ 349 viewsu07_l1_t1_we1 Identifying Rays More free lessons at: http://www.khanacademy.org/video?v=w9jEq6dmqPg Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

06:12
Area and Perimeter of Composite Figures
/ 436 viewsu07_l2_t3_we4 Area and Perimeter of Composite Figures

02:01
Parts of a Circle
/ 408 viewsu07_l2_t3_we1 Parts of a Circle More free lessons at: http://www.khanacademy.org/video?v=04N79tItPEA Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

05:07
Quadrilateral Properties
/ 452 viewsu07_l2_t1_we1 Quadrilateral Properties More free lessons at: http://www.khanacademy.org/video?v=5CeBlu260Rw Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education

05:34
Application of Similar Triangles
/ 447 viewsu07_l1_t3_we5 Application of Similar Triangles Content provided by TheNROCproject.org  (c) Monterey Institute for Technology and Education