What is the measure of ∠R?
  
 A. 
145°
  
 B. 
125°
  
 C. 
55°
  
 D. 
35
                                             
                                          
                                          
                                        
											 
											Answer:
it is d.
Step-by-step explanation:
180 - 90 - 55 = 35, D