9
QuizMultiple Choice
Proving Lines Parallel
Question 9 of 17 • ALC EAP Geometry A
Horizontal lines e and f are intersected by lines a and b. At the intersection of lines a and e, the uppercase left angle is 75 degrees. At the intersection of lines b and e, the uppercase right angle is 115 degrees. At the intersection of lines a and f, the bottom right angle is 75 degrees.
Answer
A
Lines a and b are parallel because their alternate exterior angles are congruent.B
Lines a and b are parallel because their same side exterior angles are supplementary.C
Lines e and f are parallel because their alternate exterior angles are congruent.D
Lines e and f are parallel because their same side exterior angles are congruent.