Polygons are classified according to the number of sides.

The number of diagonals of a convex polygon is 15 less than 4 times the number of its sides. The number of sides of the polygon be

The number of diagonals of a convex polygon is 15 less than 4 times the number of its sides. The number of sides of the polygon be

In a polygon the number of diagonals is 54. the number of sides of the polygon, is

In a polygon the number of diagonals is 54. the number of sides of the polygon, is

IF a polygon has 35 diagonals , then the number of sides of the polygon is

Classify the following triangles according to the length of their sides :

r -sided polygons are formed by joining the vertices of an n -sided polygon.Find the number of polygons that can be formed,none of whose sides coincide with those of the n - sided polygon.

The angle formed by the sides of a circular regular polygon at its centre is 36^@ . Find the number of sides of polygon.