[–] theoh 10y ago ↗ This demonstration is often available in hands-on science museums. The problem I have is that it's just a demonstration for one particular right-angled triangle, not a proof in any sense.See http://math.stackexchange.com/questions/675522/whats-the-int... for examples of real proofs with insight.
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[ 3.0 ms ] story [ 10.3 ms ] threadSee http://math.stackexchange.com/questions/675522/whats-the-int... for examples of real proofs with insight.