Answer:
4
similar right triangles
 


Step-by-step explanation:
 
        
             
        
        
        
You have the right answer 6p+2
        
             
        
        
        
My Question:
Is there any answer choices?
 
        
             
        
        
        
<span>regular pentagon sum of interior = (5 - 2) x 180 = 3 x 180 = 540
so 
x = 540 / 5 = 108
180 - 108 = 72
y = 72/2 = 36
z = 180 - 90 - 36
z = 54
answer
x = 108, y = 36 and z = 54</span>