The angle of elevation to the top of a building changes from 29%E2%80%8B° to 58%E2%80%8B° as an observer advances 150 feet toward the building. Find the height of the%E2%80%8B building, x, to the nearest foot.

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.