Here's a link to the actual proof, from one of the previous discussions: https://publications.azimpremjiuniversity.edu.in/4877/1/01-Shailesh_TwoNewProofsOfPytha

Here's a link to the actual proof, from one of the previous discussions: https://publications.azimpremjiuniversity.edu.in/4877/1/01-Shailesh_TwoNewProofsOfPythagoreanTheorem-I_Final.pdf https://publications.azimpremjiuniversity.edu.in/4877/1/01-S... It's well worth the read for any mathy people with high-school-level math knowledge (geometry and trigonometry).