d.
90°
B0120
1080E
100°
X
D find the value of x and shape is pentagon
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Step-by-step explanation:
Since there are 5 sides in a pentagon, substitute the side length . Divide this by 5 to determine thevalue of each angle, and then multiply by 2 to determine the sum of 2 interior angles. The sum of 2 interior angles of a pentagon is .
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