Numberphile2 | Forgotten Flexagon (extra) - Numberphile @numberphile2 | Uploaded 4 years ago | Updated 2 hours ago
Main video: youtu.be/7H4lDi79YY8
More Matt Parker (video playlist): http://bit.ly/Matt_Videos
Catch Matt on the Numberphile podcast too: numberphile.com/podcast

Matt's own website, with links to all his stuff, is at: http://standupmaths.com

Order a Parker Square T-Shirt: teespring.com/parker-square-by-numberphile

NUMBERPHILE
Website: http://www.numberphile.com
Numberphile on Facebook: http://www.facebook.com/numberphile
Numberphile tweets: twitter.com/numberphile

Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile

Videos by Brady Haran
Animation and flexagons by Pete McPartlan

Support us on Patreon: http://www.patreon.com/numberphile

Brady's videos subreddit: http://www.reddit.com/r/BradyHaran

A run-down of Brady's channels: http://www.bradyharan.com

Sign up for (occasional) emails: http://eepurl.com/YdjL9