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Answer:
∠B = 41°
Step-by-step explanation:
Step 1: Recognize that ∠B and ∠A are "remote interior angles" with respect to the exterior angle at C. Hence their sum will be equal to the measure of the exterior angle.
Step 2. Compute angle B as the difference between the exterior angle at C and the interior angle at A:
113° - 72° = ∠B = 41°
