Question

classify the given angle as acute, obtuse, right, or straight. ∠afb

Explanation:

Step1: Recall angle - type definitions

An acute angle measures between 0° and 90°, a right - angle measures 90°, an obtuse angle measures between 90° and 180°, and a straight angle measures 180°.

Step2: Observe ∠AFB

By looking at the diagram, ∠AFB is clearly less than 90°.

Answer:

A. acute