Question

Line a is parallel to line b. If the

measure of Z2 is 78°, what is the
measure of Z8?
78° =21
314
615
718
b

Answer 1

m<8 = 78°

Explanation:

<2 is given as 78°

<2 and <8 are alternate exterior angles.

Based on the alternate exterior angle theorem, <2 is congruent to <8.

Therefore:

m<8 = 78°