Which of the following statement must be true about the diagram? cheak all that apply.
need answer

As it is an equilateral traingle, 
Each interior angle will be 180/3 = 60 degree
 angle X, Y and Z are 60 degree
Angle W = 180 - 60 = 120 degree ( Linear Pair )

Now, the answers are :
A. w  > y
B.w> x
C. y + z = w
E .x+ y = w
 
The rest Option D and F are incorrect because:
Option D
x + y =z
60 + 60 = 60
but 60 + 60 = 120
Option F
z> x
60>60
But 60 can not be greater than 60
The sign must be of equal ( = )

The third box is a function