Any plane shape that is formed by the straight lines closed in a loop is called as the polygon. Diagonal is a straight line joining two vertices of polygon. Use the below calculator to find out the total number of diagonals in a polygon, using the formula given below without drawing the shape and counting the diagonals. The formula is n(n - 3)/2, where n is your number of sides.
Any plane shape that is formed by the straight lines closed in a loop is called as the polygon. Diagonal is a straight line joining two vertices of polygon. Use the below calculator to find out the total number of diagonals in a polygon, using the formula given below without drawing the shape and counting the diagonals. The formula is n(n - 3)/2, where n is your number of sides.
For a polygon with 8 sides, the number of diagonals is
= 8 (8-3) / 2
= 4 x 5
= 20