let `T_(n)` be the number of all possible triangels formed by joining vertices of an n-sided regular polygon. Iff `T_(n+1)-T_(n)=10`, the value of n is

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

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 by joining the vertices of a polygon of n sides.

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

The difference between an exterior angle of (n-1) sided regular polygon and an exterior angle of (n+2) sided regular polygon is 6^(@) . Find the value of n

Let A_1,A_2,....A_n be the vertices of an n-sided regular polygon such that , 1/(A_1A_2)=1/(A_1A_3)+1/(A_1A_4) . Find the value of n.

If the difference between the exterior angle of an( n )sided regular polygon and an (n + 1) sided regular polygon is 12^@ find the value of n.

If the difference between an interior angle of a regular polygon of (n + 1) sides and an interior angle of a regular polygon of n sides is 4^(@) , find the value of n. Also, state the difference between their exterior angles.