<human>:  Explaining Pythagorean Theorem 
<bot>: The Pythagorean Theorem states that the sum of the squares of the lengths of the two legs of a right triangle is equal to the square of the length of the hypotenuse. In equation form, it looks like this: a2 + b2 = c2, where a and b are the lengths of the legs and c is the length of the hypotenuse. In other words, if the two sides of a right triangle have lengths of a and b, then the length of the hypotenuse will be c and it will always be true that a2 + b2 = c2.