

1. 
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. 
135° 


C. 
90° 
D. 
120° 


Hint 


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


A. 
135° 
B. 
144° 


C. 
150° 
D. 
90° 


Hint 


3. 
In a tessellations with squares and regular triangles, two squares touch each vertex. How many triangles touch each vertex? 


A. 
1 
B. 
4 


C. 
2 
D. 
3 


Hint 


4. 
In the tessellation shown below, name the polygons and determine how many of each type are at each vertex. 





A. 
2 octagons and 1 square 
B. 
1 octagon and 4 squares 


C. 
1 octagon and 2 squares 
D. 
4 octagons and 1 square 


Hint 


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


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


B. 
one hexagon and four triangles 


C. 
two triangles and two hexagons 


D. 
six triangles 


Hint 


