Given: ΔABC is a right triangle There are 3 shaded squares with sides a, b, and c, respectively.

a, b, and c are also the lengths of the sides of the right triangle, such that the area of the square with side a is a2 and the area of the square with side b is b2 and the area of the square with side c is c2.

Prove: a2 + b2 = c2 (Pythagorean Theorem)

Proving which of the following will prove the Pythagorean Theorem?
m∠A + m∠B = m∠C
The area of the two smaller squares will add up to the area of the largest square.
The sides of a right triangle are also the sides of squares.
When you subtract the area of the smallest square from the medium square the difference equals the area of the largest square.