how do I know whether all the angle pairs are congruent except for "blank" which are supplementary angles with the answer in the drop box?

ANSWER
EXPLANATION
We have the 4 options given for angles formed on parallel lines by a transversal cutting through them.
Vertical angles are equal as shown below.
Alternate interior angles are equal as shown below:
Corresponding angles are equal as shown below:
Same side interior angles are not equal but they add up to 180 degrees.