140 degrees
Each exterior angle measures 40 degrees
Providing it is a regular nonagon: Exterior angle: 40 degrees Interior angle: 140 degrees
Each interior angle will measure 162 degrees
It is: 180-exterior angle = interior angle because there are 180 degrees on a straight line
140 degrees
140 degrees.
Exterior angle is 360/9 ie 40 so interior angle is 180 - 40 ie 140.
Each exterior angle measures 40 degrees
Providing it is a regular nonagon: Exterior angle: 40 degrees Interior angle: 140 degrees
Each interior angle will measure 162 degrees
The measure of each interior angle of a fifteen sided regular polygon, a pendedecagon, is 156o.
It is: 180-exterior angle = interior angle because there are 180 degrees on a straight line
144
120°
135 Each interior angle of a regular octagon measures 135 degrees.
Each interior angle of a regular 9 sided nonagon measures 140 degrees