How many diagonals are there in a polygon having 12 sides ?

What is the formula to find how many diagonals are there in a polygon with n sides?

How many diagonals are there in a polygon of n sides?

How many diagonals can an n-gon (a polygon with n sides ) have ?

How many sides are there in the given polygon?

If a polygon of ‘n’ sides has (1)/(2) n (n-3) diagonals. How many sides are there in a polygon with 65 diagonals? Is there a polygon with 50 diagonals?

If a polygon of ‘n’ sides has (1)/(2) n (n-3) diagonals. How many sides are there in a polygon with 65 diagonals? Is there a polygon with 50 diagonals?

If a polygon of ‘n’ sides has (1)/(2) n (n-3) diagonals. How many sides are there in a polygon with 65 diagonals? Is there a polygon with 50 diagonals?

If a polygon of ‘n’ sides has (1)/(2) n (n-3) diagonals. How many sides are there in a polygon with 65 diagonals? Is there a polygon with 50 diagonals?

How many diagonals does a regular polygon of 15 sides?