Answer:
Question 12: 60°
Question 13: 30°
Question 14: 60°
Question 15: 120°
Step-by-step explanation:
Question 12: The measure of a circle is 360°, so ∠CGD which is [tex]\frac{1}{6}[/tex] of a full rotation is 60°.
Question 13: ∠CGH is [tex]\frac{1}{2}[/tex] of ∠CGD, so its angle measure is 30°.
Question 14: Since the interior sum of all angles in a triangle is 180° and two angles have measures of 90° and 30°, that means ∠HCG has a measure of 60°.
Question 15: Since ∠EGC is [tex]\frac{1}{3}[/tex] of a full rotation, and is twice as great as ∠CGD, that means it has an angle measure of 120°.