A supplementary angle is an angle in which two of it's measurements can be added to equal 180 degrees.
For example, a measure of 130 and a measure of 50 in the same shape.
They can both be added to equal 180.
        
             
        
        
        
Answer:
Step-by-step explanation:

 
        
             
        
        
        
Answer:
2
Step-by-step explanation:
7/5 + 3/5 so 2 is the answer
 
        
             
        
        
        
Answer:
its proportional bc 
Step-by-step explanation:
4.2 ÷3=1.4 and if you go 5 x 1.4 you get 7 same with the last one sorry im bad at explaining but i hope this helped