I enjoy some of the Mathologer YouTube videos and they often show some great vis... | Hacker News

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ndsipa_pomu on Dec 15, 2024 | parent | context | favorite | on: A visual proof that a^2 – b^2 = (a + b)(a – b)

I enjoy some of the Mathologer YouTube videos and they often show some great visual proofs:

https://www.youtube.com/watch?v=DjI1NICfjOk (Fermat's sum of two squares)

https://www.youtube.com/watch?v=rr1fzjvqztY (Ptolemy's theorem)

https://www.youtube.com/watch?v=yk6wbvNPZW0 (Irrational numbers)

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