HypotenuseThe hypotenuse of a right triangle is the longest side of the right triangle. It is the side opposite the right angle. A common problem you see is to find the hypotenuse of a right triangle given the lengths of its other 2 sides. For example, what is the hypotenuse (C) of a right triangle whose other 2 sides (A and B) are 3 inches and 4 inches? The equation for that (the Pythagorean theorem) is C^{2} = A^{2} + B^{2}. So, C^{2} = 3^{2} + 4^{2} C^{2} = 25, so C = √25 = 5
