

1. 
Which of the following statements does not necessarily describe a polygon? 


A. 
lines do not intersect 
B. 
symmetrical 


C. 
consists of 3 or more line segments 
D. 
closed 


Hint 


2. 
Choose the best description for the figure. 





A. 
semicircle 
B. 
polygon 


C. 
not a polygon 
D. 
regular polygon 


Hint 


3. 
The sum of the measures of the angles of a regular octagon is 1,080°. Find the measure of one of its angles. 


A. 
135° 
B. 
120° 


C. 
108° 
D. 
90° 


Hint 


4. 
By drawing triangles, you can find that all of the measures of the angles in an octagon add up to 1080°. Find the measure of one angle in a regular octagon. 


A. 
135° 
B. 
150° 


C. 
1072° 
D. 
1080° 


Hint 


5. 
The sum of the angle measures of a regular hendecagon (an 11sided polygon) is 1620°. What is the measure of each of the angles of the hendecagon? Round your answer to the nearest whole degree. 


A. 
144° 
B. 
147° 


C. 
90° 
D. 
150° 


Hint 


