It can definitely be a bit tricky to remember all of the different types of angles! But let's see what we've got here.
Our given measures/variables, 134 and x, are both on the inside of the parallel lines (clue: INTERIOR). Then, we can see that they are on opposite sides (clue: ALTERNATE). Therefore, these are alternate interior angles.
Alternate interior angles are congruent, which means that x = 134 degrees.
Hope this helps!! :)
