Pythagorean Theorem [PROOF]
Here, it is best to look at a picture of Pythagorean Theorem squares, where there are 3 squares of different sizes. If you look at it, then you see that there are squares a, b, and c, with square a having an area of a^2, square b having an area of b^2, and square c having an area of c^2. Here, we have made a right angle between a and b, making c the hypotenuse of the rectangles.
