Answer :- y=50°
Explanation :-
Given : Two Parallel lines b↔ and e↔ are crossed by a transversal line a↔.
As y and 50° are alternate interior angles therefore by alternate interior angles theorem they must be congruent.
Thus y=50°
- Alternate interior angles produced when a transversal line passes through two parallel lines.
- The angles that are produced on opposite sides of a transversal line and inside the two parallel lines are said to be alternate interior angles.
- The alternate interior angles theorem tells that when the lines are parallel, then the alternate interior angles made by a transversal must be equal.
