Let's start with two adjacent squares of sides a and b. We make two cuts. Notice the hypotenuse of the yellow right triangle has a length of c.
This elegant visual proof (Proof by Tony Foster) demonstrates the theorem by dissecting two squares of sides \(a\) and \(b\), and rearranging the pieces into a parallelogram.
Let's start with two adjacent squares of sides a and b. We make two cuts. Notice the hypotenuse of the yellow right triangle has a length of c.