The missing justification is for the statement that three angles add to a particular angle. The appropriate choice is ...
... c. Angle Addition Postulate
 
        
             
        
        
        
4/5 of 55= 44 That’s the answer
        
             
        
        
        
Answer:
a. They are same side interior angles. Angle A measures 55°. 
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
That is an acute angle.
Step-by-step explanation:
None of the angles exceed 95 degrees.