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.
For a nine-sided enclosed object, a nonagaon, the equation would be 360 degrees divided by 9. That will provide you with the answer.
180-interior angle = exterior angle
The measure of the exterior angle.
It is: 180-vertex angle = exterior angle
Exterior angle+interior angle=180 degrees and 180-exterior angle=interior angle
Usually, the measure of an exterior angle of a pentagon is greater.
Each exterior angle will measure 9 degrees
Providing that it's a regular decagon then each exterior angle will measure 36 degrees
It is: 180-exterior angle = interior angle because there are 180 degrees on a straight line
The largest exterior angle measure is 120o. It is the exterior measure of an equilateral triangle (which is a regular polygon).
With a protractor or if you know the exterior angle then it's 180 - exterior angle = interior angle
In a regular polygon, the measure of the exterior angle is related to the interior angle by the equation: exterior angle = 180° - interior angle. If the exterior angle is twice the measure of the interior angle, we can set up the equation: exterior angle = 2 × interior angle. Solving this gives us the equation: 180° - interior angle = 2 × interior angle, leading to 180° = 3 × interior angle, or interior angle = 60°. This corresponds to a regular hexagon, as it has interior angles of 120° and exterior angles of 60°.