Question

classify the angle.

Explanation:

Step1: Recall angle - type definitions

An acute angle is less than 90°. A right - angle is 90°. An obtuse angle is between 90° and 180°. A straight angle is 180°. A reflex angle is greater than 180°.

Step2: Measure the given angle

The given angle is a half - circle, and the measure of a half - circle is 180°.

Answer:

straight