

1. 
Choose the best description for the figure. 





A. 
semicircle 
B. 
polygon 


C. 
regular polygon 
D. 
not a polygon 


Hint 


2. 
The sum of the measures of the angles of a regular octagon is 1,080°. Find the measure of one of its angles. 


A. 
108° 
B. 
90° 


C. 
120° 
D. 
135° 


Hint 


3. 
Which of the following angle measures represents the angles of a regular polygon that can be used to make a tessellation? 


A. 
120° 
B. 
108° 


C. 
140° 
D. 
150° 


Hint 


4. 
The sum of the angle measures of a regular dodecagon (a 12sided polygon) is 1800°. What is the measure of each angle of a regular dodecagon? 


A. 
100° 
B. 
144° 


C. 
140° 
D. 
150° 


Hint 


5. 
Which of the following angle measures represents the angles of a regular polygon that can be used to make a tessellation? 


A. 
108° 
B. 
144° 


C. 
60° 
D. 
140° 


Hint 


