Question

Find the measure of the arc or central angle indicated. Assume that the lines which appear to be diameters are actual diameters.

Answer 1

115°

Explanation:

The measure of an arc is the measure of its central angle.

Since the central angle is 115°, its intercepted arc (which is marked with the questionmark) is also going to be 115°.

Answer 2

It would most likely be 65

Explanation:

180 - 115 = 65