Question

I want how y = 128

Explain

Answer 1

Answer:

in line ef by supplementary angle concept

180-52=128°

and in CD line it make corresponding angle also 128°

which make alternate angle at y=128°

hope u can understand..

Answer 2

Answer:

52 degree is vertically opposite to y

so angle is 180 degree so if one is 52 than other 128