For lines a, c, and d, line c is parallel to line d and m∠1 = 55°.

: For the given diagram, use the measure of ∠1 to find the measure of the remaining seven angles.

: In two or more complete sentences, explain the relationship between angle pairs a)∠1 and ∠7 and b)∠1 and ∠2. in your explanation, include how you calculated each of the angle measures in the special angle pairs.