[" 20.The exterior angle of a regular polygon is one-third "],[" of its interior angle.How many sides has the polygon? "]

The exterior angle of a regular polygon is one-third of its interior angle. Find the number of sides in the polygon.

If each interior angle of a regular polygon is 3 times its exterior angle, the number of sides of the polygon is :

The sum of interior angles of a regular polygon is twice the sum of its exterior angles. Find the number of sides of the polygon.

The sum of interior angles of a regular polygon is twice the sum of its exterior angles. Find the number of sides of the polygon.