Interior Angles and Exterior Angles of Polygons

4.2

Interior Angles and Exterior Angles of Polygons

Interior angle	It is an angle that is shaped by two adjacent sides of a polygon. Angle \(a, b, \) and \(c\) are interior angles. Interior angle \(= \dfrac{(n-2) \times 180^{\circ}}{n}\) Total sum of interior angles \(= (n-2) \times 180^{\circ} \)
Exterior angle	It is an angle that is formed when one side of the polygon is extended. It is also known as a complement to an interior angle of the polygon. Exterior angle \(= \dfrac{360^{\circ}}{n}\) Total sum of exterior angles \(= 360^{\circ} \)