Angle Relationships in Parallel Lines

1. Two parallel lines are intersected by a transversal. One of the angles formed is 65°. Explain how you can find the measure of all the other angles formed by the parallel lines and the transversal. List the measures of all 8 angles.

2. Imagine a street map where two streets run parallel to each other. A crosswalk cuts across both streets at an angle. If the angle between the crosswalk and one street is 115°, what is the angle between the crosswalk and the other street on the same side of the crosswalk? Explain your reasoning using angle relationships.