what is Pythagorean Theorem
hypotenuse is the longest side of a right-angled triangle, the side opposite of the right angle.
Pythagoras' theorem, is a fundamental relation in Euclidean geometry among the three sides of a right triangle. It states that the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.
Either of the sides in a right triangle opposite an acute angle. The legs are the two shorter sides of the triangle. See also. Hypotenuse.
Pythagorean Theorem 4 Examples w/ Fractions & Radicals
Pythagorean Theorem - MathHelp.com - Geometry Help