In figure (not drawn to scale), if AB∥CD , CD∥EF and y:z=4:5 , then find the value of x .
A diagram showing three parallel lines AB, CD, and EF intersected by a transversal line. The intersection points are labeled G, H, and I respectively. Angle x is formed between the transversal and line AB. Angle y is formed between the transversal and line CD. Angle z is formed between the transversal and line EF.
(A) 100∘
(B) 76∘
(C) 82∘
(D) 122∘