

1. 
Choose the best description for the figure. 





A. 
polygon 
B. 
semicircle 


C. 
regular polygon 
D. 
not a polygon 


Hint 


2. 
Which of the following angle measures represent the angles of a regular polygon that can be used to make a tessellation? 


A. 
90° 
B. 
150° 


C. 
144° 
D. 
135° 


Hint 


3. 
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. 
150° 
B. 
1080° 


C. 
135° 
D. 
1072° 


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. 
140° 


C. 
150° 
D. 
144° 


Hint 


5. 
In the tessellation below, name the polygons and determine how many of each type are at each vertex. 


A. 
six triangles 


B. 
none of the other choices; different vertices have different polygons forming them 


C. 
one hexagon and four triangles 


D. 
two triangles and two hexagons 


Hint 


