Human: How do I find the center of a circle? Assistant: 
You can use the Pythagorean Theorem to find the center of a circle. The theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides. In this case, you are looking for the length of the side opposite the angle (the radius) and the lengths of the other two sides (which will be the diameter).