Question

what is the relationship between ∠m and ∠n? choose 1 answer: a vertical angles b complementary angles c supplementary angles d none of the above

Explanation:

Vertical angles are opposite each other when two lines intersect. Complementary angles add up to 90 degrees and supplementary angles add up to 180 degrees. Here, $\angle m$ and $\angle n$ form a right - angle (90 degrees), so they are complementary.

Answer:

B. Complementary angles