What is an inscribed angle?
Inscribed Angle: an angle made from points sitting on the circle's circumference. From the picture above , is an inscribed created by 3 points: A, B and C. A is the apex point. B and C are end points.
Move the vertex point (A) around in the circle below. What do you notice?
When the end points (B,C) do not change, the inscribed angle remain ___________ despite the change in the vertex point(A).
Move point C around. What do you notice?
Inscribed Angle Theorem : the inscribed angle is always half of the central angle.