parallel lines r and s are cut by transversal, r. if the measure of angle 1 is 68 degrees, what is the measure of angle 5?

Angle 1 and angle 5 are corresponding angles. This means that the measure of angle 1 equals the measure of angle 5. Since angle 1 equals 68 degrees, then angle 5 also equals 68 degrees.
So, the answer to this question is that angle 5 equals 68 degrees.