The exterior angle of a regular hexagon has a measure of:
A) 18°.
B) 30°.
C) 45°.
D) 60°.

Question

Quizplus · Accepted Answer

In a regular hexagon, each interior angle measures 120° (since the sum of interior angles of a hexagon is 720°). The exterior angle of a polygon is formed by extending one of its sides and the adjacent interior angle. Thus, the exterior angle of a regular hexagon can be found by subtracting the interior angle from 180°: 
180° - 120° = 60°
Therefore, the exterior angle of a regular hexagon has a measure of 60°, which is option D.

The Exterior Angle of a Regular Hexagon Has a Measure