Heronian triangles and other fascinating things, featuring Dr James Grime. Get your Superhero Triangle T-Shirt and other stuff: null More links & stuff in full description below ↓↓↓ More videos with Dr Grime: http://bit.ly/grimevideos Dr James Grime: https://www.singingbanana.com/ PAPERS: A unique pair of triangles - https://arxiv.org/abs/1809.09936 Heronian Triangles Whose Areas Are Integer Multiples of Their Perimeters - http://forumgeom.fau.edu/FG2007volume7/FG200718.pdf Discuss this video on Brady's subreddit: https://redd.it/ev4o6o The Triangle Highway: https://www.youtube.com/watch?v=wVH4MS6v23U Too Many Triangles: https://www.youtube.com/watch?v=xu-RSUGBgpA All Triangles are Equilateral: https://www.youtube.com/watch?v=Yajonhixy4g     Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science. https://www.simonsfoundation.org/outreach/science-sandbox/ And support from Math For America - https://www.mathforamerica.org/ NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Videos by Brady Haran Patreon: http://www.patreon.com/numberphile Numberphile T-Shirts: null Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/ Brady's latest videos across all channels: http://www.bradyharanblog.com/ Sign up for (occasional) emails: http://eepurl.com/YdjL9