They can not, there are only 2 sides and they probably flipped it different ways. They got 'lucky'. 
 
        
                    
             
        
        
        
Answer:
x=20
Step-by-step explanation:
Please mark as brainliest
 
        
             
        
        
        
I’ve attached a photo, with the instructions. Hope it helps. If you have any questions don’t hesitate to ask