Question

select the type of angles: <12 and <15
vertical angles
linear pair
alternate interior angles
alternate exterior angles
same side interior angles
same side exterior angles
corresponding
none

Explanation:

Step1: Recall angle - pair definitions

Vertical angles are opposite each other at an intersection. Linear pair forms a straight - line sum. Alternate interior angles are between the parallel lines and on opposite sides of the transversal. Alternate exterior angles are outside the parallel lines and on opposite sides of the transversal. Same - side interior angles are between the parallel lines and on the same side of the transversal. Same - side exterior angles are outside the parallel lines and on the same side of the transversal. Corresponding angles are in the same relative position at each intersection.

Step2: Analyze ∠12 and ∠15

∠12 and ∠15 are outside the two sets of parallel - like lines and on opposite sides of the transversal.

Answer:

Alternate Exterior Angles