Line r cuts a pair of parallel lines. One of the eight angles created measures 90°. Which statements about the angles are true?

Step-by-step explanation:

if two parallel lines are cut by a traversal, the alternate exterior angles are congruent. If two lines are cut by a traversal and the alternate exterior angles are congruent, the lines are parallel. Corresponding Angles: The name does not clearly describe the "location" of these angles