i'm refering to this:http://aleph0.clarku.edu/~djoyce/java/elements/bookIX/propIX36.html(adsbygoogle = window.adsbygoogle || []).push({});

does someone know if there's on the web another proof of this proposition, perhaps in a more readerable way. (i don't like to read also the geometrical approach and sliding through the links to the other propositions and not understanding it, [the guide doesn't help either])?

thanks in advance.

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# Proposition 36 of book IX in the elements

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