This incredible optical illusion shows how circular motion can result from linear motion! The reason we see the circle has to do with high school geometry. I explain why and give a formal mathematical proof in the video.\rbr\rbrMy blog post for this video\rbr\rbr\rbrThanks to all Patrons! Special thanks to:\rbrKyle\rbrShrihari Puranik\rbrMarlon Forbes\rbr\rbrIf you like my videos, you can support me at Patreon: \rbr\rbrSources\rbrYou can try it for yourself in this GeoGebra interive rolling circles. Set a = 6, b = 3, and remove the click mark for the outside circle. Mark the box for path or trace and click roll.\rbr\rbr\rbrCopernicus Theorem proof\rbr\rbr\rbrProof from Lines and Curves: A Prical Geometry Handbook. \rbrBy Victor Gutenmacher, N.B. Vasilyev. Preview\rbr\rbr\rbrInscribed angle theorem\rbr\rbr\rbrYou can create this illusion in Powerpoint with a tutorial from the YouTube channel The Teacher:\rbr\rbr\rbrConnect on social media. I update each site when I have a new video or blog post, so you can follow me on whichever method is most convenient for you.\rbr\rbrMy Blog: \rbrTwitter: \rbrFacebook: \rbrGoogle+: \rbrPinterest: \rbrTumblr: \rbrInstagram: \rbrPatreon: \rbr\rbrNewsletter (sent about 2 times a year): \rbr\rbrMy Books\rbr\rbrThe Joy of Game Theory shows how you can use math to out-think your competition. (rated 3.85 stars on 27 reviews) \rbr\rbrThe Irrationality Illusion: How To Make Smart Decisions And Overcome Bias is a handbook that explains the many ways we are biased about decision-making and offers techniques to make smart decisions. (rated 55 stars on 2 reviews) \rbr\rbrMath Puzzles Volume 1 features classic brain teasers and riddles with complete solutions for problems in counting, geometry, probability, and game theory. Volume 1 is rated 4.45 stars on 13 reviews. \rbr\rbrMath Puzzles Volume 2 is a sequel book with more great problems. (rated 55 stars on 3 reviews) \rbr\rbrMath Puzzles Volume 3 is the third in the . (rated 55 stars on 3 reviews) \rbr\rbr40 Paradoxes in Logic, Probability, and Game Theory contains thought-provoking and counter-intuitive results. (rated 4.75 stars on 12 reviews) \rbr\rbrThe Best Mental Math Tricks teaches how you can look like a math genius by solving problems in your head (rated 4.75 stars on 4 reviews) \rbr\rbrMultiply Numbers By Drawing Lines This book is a reference guide for my video that has over 1 million views on a geometric method to multiply numbers.