Line l is parallel to line e in the figure below.

Which statements about the figure are true? Check all that apply.
A. Vertical angles prove that Angle 1 is congruent to angle 4.
B. Vertical angles prove that Angle 2 is congruent to angle 5.
C. The triangles are similar because corresponding sides are congruent.
D. The triangles are similar because alternate interior angles are congruent.
E. In the similar triangles, Angle 3 and Angle 6 are corresponding angles.
F. In the similar triangles, Angle 3 and Angle 4 are corresponding angles.