11) Given central angle is 65 degrees. Find angle AOB.

The diagram shows a central angle $$\angle AOB$$. The angle 65 degrees is indicated as the measure of the arc AB.

A central angle is equal in measure to its intercepted arc.

Therefore, $$\angle AOB = \text{measure of arc } AB$$.

Given that the measure of arc AB is 65 degrees:

$$\angle AOB = 65^\circ$$.

Ответ: 65°