10. Calculate the measure of x,
105
A. 117
B. 120
C. 122
48
D. 125
11. How many sides does a polygon have if each of
its exterior angles measures 40 *?
A. 6
B. 7
C. 8
D. 9
12. 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. 240
D. 25°
13. What is the sum of the interior angles of a
decagon?
A. 1080* B. 1440* C. 1620 D. 1800
14. A stop sign is in the shape of regular octagon.
What is the measure of each angle of the stop
sign?
A. 108° B. 144
C. 180° D. 135°