### Home > CCG > Chapter Ch10 > Lesson 10.1.2 > Problem 10-18

10-18.

In , is a diameter and

*. Find:*

How is

related to ? and are both inscribed angles with the same intercepted arc. So, .

Use the same method you used for part (a).

The measure of the intercepted arc is twice the measure of the inscribed angle. So, the measure is

.