Help picture attached
The whole line is called a straight line and it has to equal 180° when we add it. We know that Angle M = 128° so Angle W = 128°. 180 - 128 = Angle Z 180 - 128 = 5252°Angle Z = B. 52°Check:- 52 + 128 = 180Correct!Angle Z = B. 52°