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If it is a regular nonagon, then you use the following formula:

[(s-2) x 180]/s = angle of one interior angle. (s means the number of sides)

Then solve: [(s-2) x 180]/s = [(9-2) x 180]/9 = [7 x 180]/9 = 1260/9 = 140.

Then, for the exterior angle, subtract 140 from 360. The measure of the exterior angle of a regular nonagon is 220.

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Q: What is the measure of each exterior angle of nonagon?

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Providing that it is a regular nonagon then each exterior angle measures 40 degrees and each interior angle measures 140 degrees

40 degrees

Each interior angle is 140 degrees. Each exterior angle is 220 degrees.

Each exterior angle: 40 degrees Each interior angle: 140 degrees

The measure is 360/9 = 40 degrees.

If you mean each exterior angle of a regular 9 sided nonagon then it is 360/9 = 40 degrees

Each exterior angle is: 360/9 = 40 degrees

Each exterior angle will measure 9 degrees

All exterior angles of any polygon sum to 360 deg. If there are 9 angles then each angle is 40 degrees.

360/9 = 40 degrees

The formula for an exterior angle is 180-(180/n)(n-2) where n is the number of sides. For a nonagon the number of sides is 9. Plugging this into the equation gives: 180-(180/9)(9-2) =180-(20)(7) =40 So the exterior angles of a regular nonagon will measure 40 degrees.

Providing that it's a regular decagon then each exterior angle will measure 36 degrees

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