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A Miraculous Proof (Ptolemy's Theorem) - Numberphile

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Featuring Zvezdelina Stankova... Want more?
Part 2 (bringing in Pentagons and the Golden Ratio) is at:    • Pentagons and the Golden Ratio  Numb...  
More links & stuff in full description below ↓↓↓

Zvezda's Numberphile playlist: http://bit.ly/zvezda_videos

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

Epic Circles:    • Epic Circles  Numberphile  

Triangle Magic Highway:    • Triangles have a Magic Highway  Numb...  

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

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And support from Math For America https://www.mathforamerica.org/

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Videos by Brady Haran
Additional editing and animation by Pete McPartlan

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