The sides of a regular octagon are produced to form a star. Then find the measure of the angle at each point of the star.

If a star figure is formed by elongating the sides of a regular pentagon, then the measure of each angle at the angular points of the star figure is

Find the measure of each angle of a regular polygon of 20 sides?

Two alternate sides of a regular polygon, when produced, meet at right angle. Find: the value of each exterior angle of the polygon.

Alternate sides of a hexagon are produced to meet so as to form a star-shaped figure. Show that the sum of a angles at vertices of the star is equal to 4-right angles.

The colour of a star is a measure of its .

Find the measure of each exterior angle of a regular octagon.

What is the measure of an external angle in a regular octagon ?

The measure of each interior angle of a regular octagon is