p1 = Point(10, 20)
    p2 = Point(30, 100)

    print('Should be Point(20.0, 60.0)', p1.halfway_to(p2))
    print('Should be Point(20.0, 60.0)', p2.halfway_to(p1))

    print('Should be Point(10.0, 20.0)', p1.halfway_to(p1))

    p3 = Point(-10, 20)
    p4 = Point(30, -100)

    print('Should be Point(10.0, -40.0)', p3.halfway_to(p4))
    print('Should be Point(10.0, -40.0)', p3.halfway_to(p4))

    print('Should be Point(-10.0, 20.0)', p3.halfway_to(p3))