How many triangles can be formed by joining the vertices of an n- sided polygen?

How many triangles can be formed by joining the vertices of a hexagon?

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

(i) Find the number of sides of a polygon if it has 35 diagonals. (ii) How many triangles can be formed with the vertices of an octagon?

The number of triangles that can be formed using the vertices of a 20 sided regular polygon such that the triangle and the polygon does not have any side common is

How many triangles may be formed by joining any three of the nine points when five of them are collinear?

How many triangles may be formed by joining any three of the nine points when no three of them are collinear ,

Let T_n be the number of all possible triangles formed by joining vertices of an n-sided regular polygon. If T_(n+1)-T_n=""10 , then the value of n is (1) 5 (2) 10 (3) 8 (4) 7

Let T_n be the number of all possible triangles formed by joining vertices of an n-sided regular polygon. If T_(n+1)-T_n=""10 , then the value of n is (1) 5 (2) 10 (3) 8 (4) 7

A regular polygon has 20 sides. How many triangles can be drawn by using the vertices, but not using the sides?

A regular polygon has 20 sides How many triangles can be drawn by using the vertices, but not using the sides?