1.   Find the distance between A(-2, 0, 4) and B(6, 1, 1).
    A. units B. units
    C. units D. units
    Hint

  2.   What are the coordinates of the midpoint of the segment with endpoints C(2, -4, 6) and D(7, 2, -5)?
    A. (5, 6, -11) B. (4.5, -1, 0.5)
    C. (9, -2, 1) D. (-2.5, -3, 5.5)
    Hint

  3.   Find the midpoint of the line with endpoints of (-4, -2, 4) and (3, 7, 2).
    A. (-3.5, -4.5, 1) B. (-1, 4, 2)
    C. (-4, 2, 3) D. (-0.5, 2.5, 3)
    Hint

  4.   Find the midpoint of the segment with endpoints P(0, 0, 4) and Q(0, -1, 6).
    A. (0, 0.5, -1) B. (0, -1, 10)
    C. (0, -2, 20) D. (0, -0.5, 5)
    Hint

  5.   Find the midpoint of the segment with endpoints R(20, -2, 18) and S(19, -8, 40).
    A. (78, -20, 116) B. (-19.5, 5, -29)
    C. (39, -10, 58) D. (19.5, -5, 29)
    Hint



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