The diagram shows a line going diagonally in between two parallel lines. If M and N are parallel and angle 1/8 is 135°, what is the measure of angle 7/8 and why?

Without a clear diagram, it is difficult to provide a specific answer. However, based on the information given, we can make the following observations:

1. Angle 1/8 is given as 135°. Since angles 1/8 and 7/8 are corresponding angles (lying on the same side of the transversal and between the parallel lines), they must be congruent.

2. Therefore, if angle 1/8 measures 135°, angle 7/8 must also measure 135°.

In summary, the measure of angle 7/8 is 135°.