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Pentagons and the Golden Ratio - Numberphile

2020-02-09

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video thumbnail 38:28
A Miraculous Proof (Ptolemy's Theorem) - Numberphile

2020-02-09

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video thumbnail 12:32
Pascal's Triangle - Numberphile

2017-03-10

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Too Many Triangles - Numberphile

2016-11-28

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All Triangles are Equilateral - Numberphile

2014-11-05

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video thumbnail 9:28
Shapes and Solids of Constant Width - Numberphile

2013-11-11

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