Providing that it is a regular nonagon then each exterior angle measures 40 degrees and each interior angle measures 140 degrees
Each interior angle measures 170 degrees
Each interior angle measures 165.6 degrees
2340
The interior angles add up to 4680 degrees
Presumably the question concerns a hendecagon. The sum of the interior angles of a n-gon are (n-2)*180 degrees. For a hendecagon, the sum of the interior angles would be 9*180 = 1620 degrees. If the hendecagon is regular, then all its interior angles are equal, and each is then 1620/11 = 147.2727.. degrees.
Each interior angle measures 150 degrees Each exterior angle measures 30 degrees
135 Each interior angle of a regular octagon measures 135 degrees.
Each exterior angle measures 20 degrees Each interior angle measures 160 degrees
Exterior angle measures 18 degrees Interior angle measures 162 degrees
Each interior angle measures 108 degrees
Since it has 11 sides, the sum of the interior angles is 180 degrees ( 11-2)= 180(9) or 1620 degrees.
Providing that it is a regular 24-agon then each interior angle measures 165 degrees
Each interior angle measures 144 degrees
If each interior angle measures 174 degrees then it will have 60 sides
A polygon with interior angle measures of 108 would be a pentagon
Each interior angle measures 140 degrees