The Pythagorean Theorem states that if a and b are the
lengths of the legs of a right triangle and c is the length of the
hypotenuse, then a^2 + b^2 = c^2. Prove (in paragraph form) using
the Pythagorean Theorem that if m is a real number, and m, m + 2,
and m + 4 are the lengths of three sides of a right triangle, then
m = 6.