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Both diagrams are a proof over all right-angle triangles, if you know algebra. See the very first comment after the images.
by greglindahl 10y ago
Both diagrams are a proof over all right-angle triangles, if you know algebra. See the very first comment after the images.
- theoh 10y agoHmmm. Maybe I'm just used to the convincing generality of the similarity argument (from Euclid, via Polya): https://math.berkeley.edu/~giventh/papers/eu.pdf https://math.berkeley.edu/~giventh/papers/eu.pdf But also, we can't trust geometrical diagrams: https://en.wikipedia.org/wiki/Missing_square_puzzle https://en.wikipedia.org/wiki/Missing_square_puzzle