Question

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

Explanation:

Vertical angles are formed when two lines intersect. They are opposite each other and have equal measures. Complementary angles add up to 90 degrees and supplementary angles add up to 180 degrees. In the given figure, ∠a and ∠b are opposite each other at the intersection of two lines, which is the definition of vertical angles.

Answer:

A. Vertical angles