if the sum of interior angles of a polygon is three and half times the sum of its exterior angles, what is the shape of the polygon? justify your answer.
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if the sum of interior angles of a polygon is three and half times the sum of its exterior angles, what is the shape of the polygon is 8
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Answer:
140, Nonagon
Step-by-step explanation:
3.5 x 1260
Nonagon's sum of all interior angles = 1260
Number of sides in a Nonagon = 9
Exterior Angle = 1260/9
Exterior Angle = 140
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