Question

13 find the measure of ∠abf

Explanation:

Step1: Identify angle on protractor

Locate the rays BA and BF on the protractor. The outer - scale of the protractor is used when the angle is measured in the counter - clockwise direction starting from ray BA.

Step2: Read the measurement

The ray BF intersects the outer - scale of the protractor at the mark of 150 degrees.

Answer:

$150^{\circ}$