The sum of the measures of the interior angles of an octagon =(8−2)180° . The sum of the measures of the interior angles of an octagon is 1080° .

Does an octagon have 8 interior angles?

An octagon consists of 8 interior angles and 8 exterior angles. The sum of an octagon's interior angles is 1080°, and the sum of the exterior angles of an octagon is 360°. Octagons are classified into various types based upon their sides and angles.

Do the angles of an octagon add up to 360?

The sum of all the internal angles of any octagon is 1080°. As with all polygons, the external angles total 360°. An octagon has eight sides, so the sum of the angles of the octagon is 180(8 – 2) = 180(6) = 1080 degrees. Because the octagon is regular, all of its sides and angles are congruent.