Explore the angles of a circle by following these steps.

✓ 1. Move point G to point A and move point L to point B and observe how the angle measures change.

✓ 2. The measure of the circumscribed ∠GHL is 59° 118° 121° when the points of tangency are A and B.

✓ 3. The sum of the measures of the central angle and the circumscribed angle is 59° 180° 360° .