*** use image attached Which theorem(s) should be used to prove that angles in this figure are congruent? Select all that apply.
A.
If two parallel lines are cut by a transversal, then corresponding angles are congruent.
B.
If two parallel lines are cut by a transversal, then alternate interior angles are congruent.
C.
If two angles of one triangle are congruent to two angles of another triangle, the third angles are congruent.
D.
If two parallel lines are cut by a transversal, then same-side interior angles are supplementary.
Complete the proof below.