g\) is the interior angle. \(h\) is the exterior angle ... draw a line parallel to one side of the triangle. \(d = b\) (alternate angles are equal) \(e = c\) (alternate angles are equal ...

One interior angle is \(720 \div 6 = 120^\circ\). If the side of a polygon is extended, the angle formed outside the polygon is the exterior angle. The sum of the exterior angles of a polygon is ...