Find the measure of each extrerior angle of a regular polygon of: (a)9 sides (b) 15 sides.

Find the radians the interior angle of a regular pentagon.

What is a regular polygon?State the name of a regular polygon of: (a) 3 sides (b) 4 sides (c)5 sides.

Measure and classify each angle :

Number of diagonals in a polygon of m sides is :

Let T_n denote the number of triangles which can be formed using the vertices of a regular polygon of n sides . If T_(n+1)-T_n=21 , then n equals :

Find the difference between the area of a regular hexagon whose sides is 72cm and the area of the circle inscribed in it.

Find the measure of angle ‘a’ in each figure. Give reason in each case .

The sum of the radii of inscribed and circumscribed circles for an n-sided regular polygon of side 'a' is

Name each Polygon, (b)

Find the number of triangles whose angular points are at the angular points of a given polygon of n sides, but none of whose sides are the sides of the polygon.