Explain the Pythagorean theorem and test me with a quiz, without giving away the answers or telling me if I answered correctly.

The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides. Quiz: 1. What is the name of the longest side in a right triangle? 2. What does the Pythagorean theorem state about the lengths of the sides of a right triangle? 3. If one leg of a right triangle has length 3 and the hypotenuse has length 5, what is the length of the other leg?