Central Angle Inscribed angle Inscribed angle Inscribed angle When the vertex is at the center of the circle, the measure of a Central Angle is equal to the measure of it’s intercepted arc When the vertex is ON the circle, then the measure of an angle inscribed in a circle, is = ½ the measure of the corresponding minor arc Vertex is INSIDE of the circle, then the measure of an angle inscribed in a circle, is = ½ the SUM of the corresponding arcs Vertex is OUTSIDE of the circle, then the measure of an angle inscribed in a circle, is = ½ the difference of the corresponding arcs m∠APB = mAB Instructions: Students could either make their own foldable or the teacher can copy the pages front/back. Fold the paper in half where the first page is showing on top. On the top half of the foldable, cut along the line, creating a flap that can be lifted to reveal clues and examples. Teachers should work out the example problems to ensure students know the correct way to answer/solve them.