3.) If a polygon is divided into 9 triangles, then what is the sum of the interior angles of
the polygon?
A. 1 620°
B. 1 260°
C. 360°
D. 1980°
4.) A stop sign is in the shape of regular octagon. What is the measure of each angle
of the stop sign?
A. 108°
B. 1449
C. 180°
D. 135°
5.) Find the measure of one exterior angle of a regular polygon whose sum of the
interior angles is 2 340°.
A. 130
B. 32°
C. 24°
D. 25°​