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.

What is the number of diagonals which can be drawn by joining the angular points of a polygon of 100 sides?

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

" Total number of rectangles which can be formed using the vertices of "16" sided regular polygon is "

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

Find the number of diagonals of a polygon of 10 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: (a) 4825 (b) ^17 C_4-^(15)C_2 (c) 2275 (d) 2125