YZ is formed by the angle marked by one red line.
JG is formed by the angle marked by no red lines.
So we cannot say that YZ = JG .
XY is formed by the angle marked by two red lines.
JH is formed by the angle marked by one red line.
So we cannot say that XY = JH
∠Y is marked by no red lines.
∠J is marked by two red lines.
So we cannot say that ∠Y = ∠J
∠Y is marked by no red lines.
∠H is marked by no red lines.
So ∠Y = ∠H