

1. 
Choose the best description for the figure. 





A. 
not a polygon 
B. 
semicircle 


C. 
polygon 
D. 
regular polygon 


Hint 


2. 
The sum of the measures of the angles of a regular octagon is 1080°. What is the measure of each angle? 


A. 
144° 
B. 
120° 


C. 
108° 
D. 
135° 


Hint 


3. 
The sum of the measures of the angles of a regular octagon is 1080°. What is the measure of each angle? 


A. 
120° 
B. 
135° 


C. 
108° 
D. 
144° 


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. 
1080° 
D. 
1072° 


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. 
150° 


C. 
120° 
D. 
140° 


Hint 


