Question

Oak Street and Elm Street run parallel to each other. When Main Street

intersects them, it forms interior 4, measuring 35°. What is the measure of
6?

Answer 1

A. 145°

Explanation:

<4 = 35° (given)

m<6 + m<4 = 180° (same side interior angles are supplementary)

Thus:

m<6 + 35° = 180° (substitution)

m<6 + 35° - 35° = 180° - 35° (subtraction property of equality)

m<6 = 145°