Corresponding angles are congruent and linear angle pairs sum to 180 degrees,
so 5a + 65 = 180
Vertical angles are congruent, so 5a = 115
If the measure of the angle where the library is located equals 42 degrees, and the angle where the school is located measures x degrees, which equation is true?
x = 42, because vertical angles are congruent
x = 42, because alternate exterior angles are congruent
x = 42, because alternate interior angles are congruent
x = 42, because corresponding angles are congruent
