Question

find exterior angle with regular polygon with 9 sides
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Answer 1

Answer:

One exterior angle of a regular 9-sided polygon is 40°.

Step-by-step explanation:

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Answer 2

We know that, sum of interior angles is (n − 2) × 180°

So, sum of interior angles when n = 9 is

= (9 - 2) × 180°

= 7 × 180°

= 1260°

So, one angle of the polygon = 1260° ÷ 9

= 140°

So, exterior angle = 180° - 140°

= 40°