Thanks for that link. That brings back memories. I had to learn that proof many, many years ago.
Bob
]]>http://farside.ph.utexas.edu/euclid/Elements.pdf
Book1, Prop.48, Prop.49
the second one (if i remember good) is the Inverse theorem (i.e. if a triangle is such that c²=a²+b², then it's rectangle).
]]>Neat animation, thanks!
Bob
]]>That is the best I can do to just keep the math and leave out the strong comments.
]]>I'm not an established user yet (no link posting) so
[Thanks to the admin for posting the animation!]
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