Answer:
15 degrees
Explanation:
ALL of the angles in the 12 sided polygon will be equal to 150 degrees. You already have Q which is 150 degrees. If you do know that angles in a triangle add up to 180 degrees then you should subtract the angle Q (150 degrees) from 180 and you should get 30 degrees left. This is the total angle of angles P and R. As it is a regular shape, the angles should be equal to each other. This means that both of them would be equal to 15 degrees.
This means angle PRQ is 15 degrees.