im having trouble figuring out which statement is not true
A)x/a = a/c
B)x/a = a/y
C)y/b = b/c
D)x/h = h/y
here my diagram
---> a and A are refering to the length of the same side of the triangle?
---> what kind of triangle do you mean: isosceles right triangle, isosceles triangle, a more general triangle?
Without these additional informations I can't help you.