Question

complete each sentence below by selecting always, sometimes, or never. 13. alternate interior angles are __________ congruent. a. always b. sometimes c. never 14. adjacent angles __________ share the same vertex. a. always b. sometimes c. never

Explanation:

Step1: Recall angle - congruence rule

Alternate interior angles are congruent when the two lines intersected by the transversal are parallel. When the lines are not parallel, they are not congruent. So, alternate interior angles are sometimes congruent.

Step2: Recall adjacent - angle definition

Adjacent angles are defined as two angles that have a common vertex and a common side. So, adjacent angles always share the same vertex.

Answer:

1. B. sometimes
2. A. always