What is the displacement of a ball that is kicked 5 meters north, rolls 5 meters west, is kicked 10 meters east, rolls 10 meters south, then kicked back 5 meters west? In the above question what is the balls distance? ​

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.