**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?**

**Investigation 2: **

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.