Question

estimate the measure of this angle within 15°.

Explanation:

Step1: Recall angle types

Acute angles are less than \(90^{\circ}\), right angles are \(90^{\circ}\), obtuse angles are between \(90^{\circ}\) and \(180^{\circ}\). This angle is obtuse.

Step2: Estimate within \(15^{\circ}\)

A \(120^{\circ}\) angle (since \(90 + 30=120\), and it looks larger than \(90^{\circ}\) but not close to \(180^{\circ}\)).

Answer:

\(120\)