Question

1. what is the degree of the angle a in the picture below? (picture of a protractor with points b, a, f and a straight line through a, with options 90°, 360°, 180°, 0°)

Explanation:

Step1: Identify angle type

Angle A is a straight angle, formed by points B, A, F on a straight line.

Step2: Recall straight angle measure

A straight angle equals $180^\circ$, matching the protractor's full semicircle mark.

Answer:

C. $180^\circ$