Question

Line m is intersected by line t, as shown in the diagram below.

Based on the diagram, which of the following equations must be true?
a mz1+ m22 = 180°
b. m21+ m23 = 180°
C. m2 2 + m23 = 90°
d. m2 2 + m 24 = 90°

Answer 1

a is the best answer

Explanation:

mz1+m22=180°

Answer 2

Explanation:

Only (a) sum of angles 1 and 2 = 180° is true.