The sum of all interior angles of a regular polygon is twice the sum of all

its exterior angles. The polygon is

If each interior angle of a regular polygon is 11 times its exterior angle, the

number of sides of the polygon is

The sum of all interior angles of a regular polygon is 1080°. The number of sides of the polygon is -

The ratio between the number of sides of two regular polygons is 1 : 2 and ratio between their interior angles is 2 : 3. The number of sides of these polygons are respectively

If one of the interior angles of a regular polygon is equal to\(\frac{9}{8}\) of each interior angle of a regular hexagon, then the number of sides of the polygon is

The ratio of the measure of an interior angle of a regular octagon to the measure of each of its exterior angles is

How many diagonals are there in a hexagon?

How many diagonals are there in a decagon?

A polygon has 27 diagonals. The number of sides of the polygon is

The angles of a pentagon are in the ratio 1:2:3:5:9. The smallest angle is