The Pythagorean Theorem relates the two legs of a right triangle to its hypotenuse. Which equation states this relationship?

1. The Pythagorean Theorem states that the sum of the squares of the two legs equals the square of the hypotenuse. 2. Writing the legs as a and b and the hypotenuse as c, this becomes a squared plus b squared equals c squared. 3. Simply adding the side lengths, or subtracting the squares, does not match the relationship the theorem describes. _Source: OpenStax Prealgebra (CC BY 4.0), Ch 9 "Math Models and Geometry", section 9.3 Use Properties of Angles, Triangles, and the Pythagorean Theorem_