If x = 0.123412341234... (0.1234 repeating) and y = 0.987987987... (0.987 repeating), must x + y have a decimal expansion that repeats? Must x / y? Explain.

If the angle bisectors of a pair of opposite angles of a quadrilateral are the opposite sides of a parallelogram formed by the two angle bisectors and two sides of the quadrilateral, is the quadrilateral always a parallelogram? explain your answer.