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A Miraculous Proof (Ptolemy's Theorem) - Numberphile

2020-02-09

[public] 760K views, 24.3K likes, 340 dislikes audio only

Featuring Zvezdelina Stankova... Want more?

Part 2 (bringing in Pentagons and the Golden Ratio) is at: /youtube/video/o3QBgkQi_HA

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Zvezda's webpage: https://math.berkeley.edu/~stankova/

Epic Circles: /youtube/video/sG_6nlMZ8f4

Triangle Magic Highway: /youtube/video/wVH4MS6v23U

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