Question

estimate the measure of this angle within 15°.

Explanation:

Step1: Recall angle types

An angle less than \(90^{\circ}\) is acute, equal to \(90^{\circ}\) is right, and greater than \(90^{\circ}\) but less than \(180^{\circ}\) is obtuse.

Step2: Estimate the angle

This angle is obtuse. A common estimate for such an angle (within \(15^{\circ}\)) is \(120^{\circ}\) (as it's more than \(90^{\circ}\) but not close to \(180^{\circ}\)).

Answer:

\(120\)