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1. If 22.5° is the central angle of a regular polygon, determine:
a. the number of sides of the polygon
b. the vertex angle of the polygon
c. the exterior angle of the polygon
2. If m and n are parallel lines and the measure of ∠b is 31°, find the measures of the rest of the labeled angles.
∠a = , ∠c = , ∠d = , ∠e =
∠f = , ∠h =
∠g =
3. Measure the following angle.