The three sides of a right triangle can be described
as a, b, and c. a and b are the two short legs, and
c is the hypotenuse which is always the longest side.
The formula a^2 + b^2 = c^2 relates the three sides
of a right triangle. For example, 8, 15, and 17 can
be 3 side lengths to a right triangle because
8^2 + 15^2 = 17^2
