Answer:
What?
Step-by-step explanation:
 
        
                    
             
        
        
        
Step-by-step explanation:
X+100=180(linear pair) 
X=180-100
X=80
30+y+x=180(sum of angle of triangle) 
Y=180-110
Y=70
 
        
                    
             
        
        
        
Answer:
25
Step-by-step explanation:
 
        
                    
             
        
        
        
If he took 5 steps forward and then 5 steps backwards he would be at his starting position