Continuing on from Zvezda's previous video about Ptolemey's Theorem (see: [ Ссылка ]) now we use it to prove some cool stuff with pentagons and equilateral triangles.
More links & stuff in full description below ↓↓↓

Zvezda's Numberphile playlist: [ Ссылка ]

Zvezda's webpage: [ Ссылка ]

Golden Ratio: [ Ссылка ]

Epic Circles: [ Ссылка ]

Triangle Magic Highway: [ Ссылка ]

Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): [ Ссылка ]

We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science. [ Ссылка ]

And support from Math For America - [ Ссылка ]

NUMBERPHILE
Website: [ Ссылка ]
Numberphile on Facebook: [ Ссылка ]
Numberphile tweets: [ Ссылка ]
Subscribe: [ Ссылка ]

Videos by Brady Haran

Patreon: [ Ссылка ]

Numberphile T-Shirts and Merch: [ Ссылка ]

Brady's videos subreddit: [ Ссылка ]

Brady's latest videos across all channels: [ Ссылка ]

Sign up for (occasional) emails: [ Ссылка ]

свернуть