Lines e and f are intersected by line a. At the intersection of lines a and e, the bottom right angle is 72 degrees. At the inte
rsection of lines a and f, the uppercase right angle is 108 degrees. Given the information in the diagram, which theorem best justifies why lines e and f must be parallel? alternate interior angles theorem same side interior angles theorem converse of the alternate interior angles theorem converse of the same side interior angles theorem
