Besides empirical measuring and without Pythagoras' knowledge of the theorem, how do we know the lengths of the sides of a triangle? Is this dealt with in "The Elements"?(adsbygoogle = window.adsbygoogle || []).push({});

That is, if we define the length of one side, with three angles, how do we know what's the measure of the other two sides using the most elementary methods?

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# How do we know the lengths of the sides of a triangle?

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