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

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

Number of diagonals in a polygon of m sides is :

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.

Name each Polygon, (c )

How many sides does a regular polygon have,if the measure of an exterior angle is 24^@ ?

Name each Polygon, (b)

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 :

The perimeter of a regular pentagon is 100 cm. How long is its each side?

In a polygon the number of diagonals 77. Find the number of sides of the polygon.