Fill in the missing statement and reason in the proof of the alternate interior angles theorem.
it is given that ab is parallel to cd and points e, g, h, and f are collinear. zagf and legb are vertical and congruent by the vertical angles theorem. zegb and
lehd are congruent according to the
finally, by the transitive property of equality.
corresponding angles theorem; zagf and zehd are congruent
o alternate exterior angles theorem, zegb and lehd are congruent
o corresponding angles theorem; zegb and zehd are congruent
o alternate exterior angles theorem; zagf and lehd are congruent