Answer:
x = 75
Step-by-step explanation:
If the lines were parallel, then
the angle on the left of the triangle = 55° ( alternate angles )
The angle at the top of the triangle = 50° ( vertical angles )
x = 180 -(55 + 50) ← sum of angles in a triangle = 180°
x = 180 - 105 = 75
For the lines to be parallel then x = 75
