Visual proofs are uniquely beautiful. See the 2 & 3 proofs of Pythagorean Theorem: http://www.cut-the-knot.org/pythagoras/index.shtml http://www.cut-the-knot.o

Visual proofs are uniquely beautiful. See the 2 & 3 proofs of Pythagorean Theorem: http://www.cut-the-knot.org/pythagoras/index.shtml http://www.cut-the-knot.org/pythagoras/index.shtml