Answer:
Value of y is 80°
Step-by-step explanation:
Given: Line a and b are parallel.
line a is traversal.
To find: Value of y.
Construction : mark ∠1
Figure is attached.
∠1 = 80° ( vertically opposite angles are equal )
Now,
We know that when lines are parallel then the corresponding angles formed by them and traversal are equal.
y = ∠1
⇒ y = 80°
Therefore, Value of y is 80°
