

1. 
Which pair of angles are complementary? 


A. 

B. 



C. 

D. 



Hint 


2. 
Angles A and B are supplementary. If = 45°, find . 


A. 
75° 
B. 
135° 


C. 
90° 
D. 
45° 


Hint 


3. 
Angles A and B are complementary. If mA = 25°, what is mB? 


A. 
90° 
B. 
25° 


C. 
75° 
D. 
65° 


Hint 


4. 
Classify the pair of angles below. 





A. 
supplementary 
B. 
complementary 


C. 
both 
D. 
neither 


Hint 


5. 
The county engineer is designing a new road to cross existing Oak Boulevard as shown in the diagram. What is the missing angle measure? 





A. 
41° 
B. 
51° 


C. 
15° 
D. 
39° 


Hint 


