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64. The sum of interior angles of regular polygon is thrice the sum of its exterior angle. The polygon is a. hexagon c. decagon b. octagon d. nonagon |
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Answer» Answer: Step-by-step explanation: Sum of the EXTERIOR angle of a polygon = Sum of the INTERIOR angle of a polygon = If in a regular polygon, each interior angle = 120 deg, then each exterior angle = 180–120 = 60 deg. So the polygon has 360 deg/60 deg = 6 sides. The figure is a regular hexagon. |
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