From the following figure, how can you conclude that lines l and m are parallel? a) corresponding angles postulate b) alternate exterior angles theorem c) alternate interior angles theorem d) same side interior angles theorem

C) Alternate interior angles theorem.

Step-by-step explanation:

Given : Figure with two line l and m ans alternates interior angle 70°

To find : how can you conclude that lines l and m are parallel.

Solution : We have given that two line l and m ans alternates interior angle 70°.

Two angle are alternate and interior to the line l and m .

Hence they are congruent to each other .

By the alternates interior angle theorem :   if two parallel lines are cut by a transversal, then the pairs of alternate interior angles are congruent.

Therefore, C) Alternate interior angles theorem.

-2

7 - 9 = -2

reversed:

-2 + 9 = 7