Question

what is the measure of this angle? the dashes are 15° apart.

Explanation:

Step1: Identify angle position

The angle starts from 0° and ends at a position between 0° and 90°.

Step2: Count the intervals

Since the dashes are 15° apart and there are 3 intervals from 0° to the end - point of the angle.
$15\times3 = 45$

Answer:

$45^{\circ}$