The number of rectangles that can be obtained by joining four of the twelve vertices of a 12 - sided regular polygon is :

The number of rectangles that can be obtained by joining four of the twelves verties of a 12-sides regular polygon is -

The number of rectangles that can be obtained by joining four of the twelves verties of a 12-sides regular polygon is -

The number of rectangles that can be obtained by joining four of the twelves verties of a 12-sides regular polygon is -

The number of triangle that can be formed by joining the vertices of a regular polygon of n sides is

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

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

The number of triangles that can be formed by joining the vertices of a regular polygon of side n is denoted by T_(n) If T_(n+1)-T_(n)=21 then the value of n will be -

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 :

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