What is true about traversals, no matter how they go through the parallel lines?

Transversals? Transversals are different from traversals.

Step-by-step explanation:

Transversals always go through parallel lines. Okay, here are the rules. All pairs of alternate interior angles, alternate exterior angles, and corresponding angles are congruent pairs if the lines the transversal intersects are parallel, in which case each pair of consecutive interior angles are supplementary. That's four rules right there.

Here are four more. If any of those pairs is congruent or supplementary, the lines the transversal intersects are parallel.

Vertical angles are always congruent, and any two angles that form a linear pair are supplementary. When you know all these rules, you can take the measure of any angle in the diagram and determine the measures of all the other angles as long as the lines intersected by the transversal are parallel.