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Pls help me its urgent........... help me out its my request no spam pls
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Answer:
The exterior angles of a polygon=360°.In a regular polygon all interior angles are congruent.As a result all exterior angles in a regular polygon are congruent.360°/90=40°.
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Answer:
Sum of exterior angles=360°
No. of sides=9
Measure of each exteriors angle= 360/9=40° each
Interior angle+Exterior angle=180°........linear pair of angles
Therefore,
Interior angle+40°=180°
Interior angle=140°
Sum of interior angle=140*9......9 sides
1260°