Question

choose 1 answer:
a vertical angles
b complementary angles
c supplementary angles
d none of the above

Explanation:

Step1: Recall angle - pair definitions

Vertical angles are opposite angles formed by two intersecting lines. Complementary angles are two angles whose sum is 90 degrees. Supplementary angles are two angles whose sum is 180 degrees.

Step2: Analyze the given angles

In the figure, if we assume the intersection of the lines at point \(X\), angles \(m\) and \(n\) are adjacent angles formed by two intersecting lines. Since the sum of adjacent angles on a straight - line is 180 degrees, angles \(m\) and \(n\) are supplementary angles.

Answer:

C. Supplementary angles