Answer:
i think is B
explanation: 
reflection across a vertical line
 
        
                    
             
        
        
        
Answer:
Two angles are called complementary when their measures add to 90 degrees. ∠1 is 60 degrees ∠2 is 30 degrees so if you add it up, the answer is  90 degrees.
∠4 + ∠3 = answer has to be 90 degrees to call it a complementary angle
30 degrees + 60 degrees = 90 degrees
 
        
             
        
        
        
Answer:x=17.67 y=13.15
Step-by-step explanation: really hoping it is right!
 
        
             
        
        
        
Answer:
Yes
Step-by-step explanation:
12 + 3(20) = 72
12 + 60 = 72