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

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

How many hexagons can be constructed by joining vertices of a quindecagon if none of the sides of the hexagon are also the sides of the quindecagon

Find the number of diagonals by joining the vertices of a polygon of n sides.

Let A_(1),A_(2),A_(3)...,A_(n) are the vertices of a polygon ofnsides.If the number of pentagons that can beconstructed by joining these vertices such that none of the side of the polygon is also the side ofthe pentagon is 36, then the value of 'n' is :

Consider a polygon of sides 'n' which satisfies the equation 3*.^(n)P_(4)=.^(n-1)P_(5) . Q. Number of quadrilaterals thatn can be formed using the vertices of a polygon of sides 'n' if exactly 1 side of the quadrilateral in common with side of the n-gon, is

The number of diagonals in a polygon is 20. The number of sides of the polygon is

Find the number of diagonals of a polygon of 20 sides

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

Consider a polygon of sides 'n' which satisfies the equation 3*.^(n)P_(4)=.^(n-1)P_(5) . Q. Number of quadrilaterals that can be made using the vertices of the polygon of sides 'n' if exactly two adjacent sides of the quadrilateral are common to the sides of the n-gon is

A convex polygon has 65 diagonals. Find number of sides of polygon.