If its a regular polygon then its 147 degrees.
158.82 degrees
360 / 9 = 40
Providing that it is a regular 36-agon then each exterior angle is 10 degrees and each interior angle is 170 degrees
Each exterior angle is 360/26 = 13.846 degrees approx. So each interior angle = 180-13.846 = 166.154 degrees (approx).
If it is a regular 12 sided polygon then each interior angle is 150 degrees.
If its a regular polygon then its 147 degrees.
170.27 degrees
158.82 degrees
150 degrees each
Providing that it is a regular 15 sided polygon then each interior angle will be 156 degrees
360 / 9 = 40
Each interior angle is 162 degrees.
You simply do 360/20=18 so the size of each interior angle is 18 degrees.
Providing that it is a regular 36-agon then each exterior angle is 10 degrees and each interior angle is 170 degrees
Providing that it is a regular 28 sided polgon then each interior angle will measure: 1670 8' 34.29''
Each interior angle of the regular 8 sided octagon measures 135 degrees