Important Math Formula

To find the sum of the interior angles of any polygon use: (n-2) X 180 where n represents the number of sides. Using this formula to find the sum of the interior angles of 5 sided figure (a pentagon) (5-2) X 180=540 degrees. Assuming all the angles are equal, to find the value of each angle use (n-2) X 180/n so (5-2) X 180/5=108.