July 1st, 1997
The Pythagorean theorem states that for any right triangle the area of the smallest square (AxA) plus (+) the area of the middle sized square (BxB) will always equal (=) the area of the largest square (CxC). Thus (A2 + B2 = C2).
But this simple algebraic formula, while truthful, reveals nothing of the elegant visual constructions devised for its demonstration.
Davidson, D., Kauffman, L., Seeing is Believing: Visual Proofs of the Pythagorean Theorem, Quantum, vol 7, no 6, pp. 24-27, July 1st, 1997.