Question

what is the measure of this angle? m∠abc = ? °

Explanation:

Step1: Identify starting - point

The ray BC is at 0°.

Step2: Identify ending - point

The ray BA is at 240°.

Step3: Calculate angle measure

The measure of ∠ABC is the difference between the positions of the two rays. Since we go from 0° to 240°, m∠ABC = 240°.

Answer:

240°