Answer :
The sum of the angles of any polygon with 'n' sides is (n - 2) times 180 degrees.
1980 / 180 = 11 , so the polygon has 13 sides and 13 angles.
If the polygon is regular, then all the angles are equal.
Each interior angle is 1980/13 = 152.308 degrees (rounded)
1980 / 180 = 11 , so the polygon has 13 sides and 13 angles.
If the polygon is regular, then all the angles are equal.
Each interior angle is 1980/13 = 152.308 degrees (rounded)