Non-intersecting lines that are separated by equal distances at every point can best be described as

What kind of bond pays interest which is exempt from tax?

Need so much on this one how many yards?

Aconstruction worker needs to put a rectangular window in the side of a building he knows from measuring that the top and bottom of the window have a width of 8bfeet and the sides have a length of 15 feet he also measured one diagonal to be 17 feet what is the length of the other diagonal