15 Feb
2016
15 Feb
'16
6:21 p.m.
On 2016-02-15 13:40, Hans Havermann wrote:
See proof #7 here: http://www.cut-the-knot.org/pythagoras/
Ah, so Andy Latto's proof is actually the proof in Euclid. That predates my Polya reference, for sure. However, the presentation by Andy (and Polya, if I recall correctly) were both much more clearly presented (well, to the extent that I am a proxy for modern audiences). [Incidentally, I actually also really like the proof in the "Remark" on #8. I'm not sure I ever saw that one before.]
On Feb 15, 2016, at 12:49 PM, Michael Greenwald <mbgreen@seas.upenn.edu> wrote:
I'm very sure I've seen this proof in either Polya "How to Solve it", or "Induction and Analogy in Mathematics".