Review: An incribed angle has its vertex on a circle and intersects the same circle in two additional points. Angle A below is an inscribed angle.
Construct a circle with inscribed angle BAC. Construct arc BC. Measure angle BAC and arc BC. Try dragging points A, B and C. What appears to be true? Proof? Hint?
What would be true about two different inscribed
angles on the same circle that intercepted the same arc? Why?
Develop a GSP sketch that illustrates this concept.