Here's the question you clicked on:
BVB_army
.
there are loads of proof but all of them are derived from geometry and as far as i remember one besides geometry is by trigonometry
you will find 97 proofs here http://www.cut-the-knot.org/pythagoras/index.shtml
yes these all are proofs just go on the link i mentioned and you will find 97 proofs :D
it has every type of proof that has been derived by mathematicians and that is more than enough for you i guess :)
ok, again thanks for the help.