Inscribed Angle Theorem
Students:
The directions for this activity can be found below the applet.
Step 1
Use the Ray tool to construct the following:
Ray with endpoint B that passes through A.
Ray with endpoint B that passes through C.
Step 2
This angle with vertex B you've just constructed is said to be an inscribed angle of the circle.
This inscribed angle B is said to intercept arc AC.
Use the Angle tool to find and display the measure of this inscribed angle.
Step 3
Use the Ray tool to construct the following:
Ray with endpoint O that passes through A.
Ray with endpoint O that passes through C.
Step 4
Click the Show Other Point checkbox to display another point (point D) on the pink arc. Then create an inscribed angle with vertex D that intercepts arc AC. Then measure this angle.