A. look at the diagram of the two squares shown below. the pythagorean theorem says that for any right triangle, the square of the length of the hypotenuse, c, is equal to the sum of the squares of the lengths of the legs (a and b): a2 + b2 = c2. explain how the diagram shown above can be used to prove the pythagorean theorem. show your work. b. look at the small box shown below. what is the length of the diagonal of the box shown? leave your answer in radical form. show your work and explain your steps.