Interior Angle And Exterior Angle Calculator. Determine the total sum of the interior angles using the formula A n-2180. For example a square would have 4 sides and a pentagon would have 5 sides.
If we extend any side beyond a vertex the angle formed by this new segment and the adjacent side is called an exterior angle. Interior and exterior angles add up to. The exterior angles are the angles formed between a side-length and an extension.
One exterior angle 360n here n total number of sides.
In order to find the measure of a single interior angle of a regular polygon a polygon with sides of equal length and angles of equal measure with n sides we calculate the sum interior anglesor red n-2 cdot 180 and then divide that sum by the number of sides or red n. Simply enter one of the three pieces of information. Angles Find Exterior Angle In Equilateral Triangle Grade 3. For this example we will look at a hexagon that has six sides.