In the diagram below, AB is parallel to CD. What is the value of y?

y= 45 because the angle by d is the same exact angle hope this helps
Answer:
Option B is correct.
y=45
Step-by-step explanation:
We have been given two parallel lines: AB || CD
And a line that cuts two parallel lines is a transversal line.
And Angles on the transversal are alternate interior angles which are equal.
Please look at the attachment to get the label of angles.
∠1=∠2
y=45
Therefore, Option B is correct.