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fixed broken link (since this thread is already bumped), adjusted MathJax, corrected typo

edited Mar 10, 2022 at 20:09

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On the theorem of Pythagoras by E.W. Dijkstra. (Did you know that in every plane triangle $\operatorname{sgn}(\alpha + \beta - \gamma) = \operatorname{sgn}(a^2 + b^2 - c^2)$, a "theorem, say, 4 times as rich [as the original]"?)

answered Sep 3, 2010 at 15:59

Hans-Peter Stricker

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