Draw the Diagonals and Identify Center

What happens here

Now that the square perfectly encloses the circle, use the speed square as a straight edge. Draw a diagonal line connecting one corner of the square directly to its opposite corner. Repeat this process for the other pair of opposite corners, drawing a second diagonal line. The point where these two diagonal lines precisely intersect is the exact center of the original circle. The presenter then explicitly points to this intersection to highlight the located center.

Goal: Pinpoint the exact center of the circle by finding the intersection of the square's diagonals.