The measure of an interior angle of a regular polygon is 140o. The number of sides and diagonals in this polygon are:
7,14
9,27
7,17
8,20
Let n be the number of sides in this polygon.
The interior angle of a regular polygon is 140∘. Find the number of sides of that polygon.
Each interior angle of a regular polygon is 144°. The measure of each interior angle of a regular polygon which has double the number of sides as the first polygon is