Find the number of triangles which can be formed having vertices at angular points of a convex polygon of m sides.

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.

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

Let T_n denote the number of triangles, which can be formed using the vertices of a regular polygon of n sides. It T_(n+1)-T_n=21 ,then n equals a. 5 b. 7 c. 6 d. 4

Find the number of diagonals that can be drawn by joining the angular points of a heptagon.

Find the number of diagonals that can be drawn by joining the angular points of a a polygon of 20 sides.

How many quadrilaterals can be formed joining the vertices of a convex polygon of n sides?

Number of triangles that can be formed by joining the 10 non-collinear points on a plane is

Find the number of diagonals in the convex polygon of n sides .

Number of quadrilaterals which can be constructed by joining the vertices of a convex polygon of 20 sides if none of the side of the polygon is also the side of the quadrilateral is

Number of quadrilaterals which can be constructed by joining the vertices of a convex polygon of 20 sides if none of the side of the polygon is also the side of the quadrilateral is