Problem 4.6B

I am honestly not sure if I interpreted the problem right but the angle of the intersecting lines of the original and second reflection are always the same. I could not figure out what you could do to get this transformation in one step. I tried to reflect it over the other line first but that did not work. I did notice that the angles are always equal no matter how you move things, but this makes sense because of rules we already know about angles with intersecting lines.