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Cube & vectors

  1. Aug 28, 2005 #1
    Hello :D

    ABCDEFGH is a cube with a side of 3cm. The points I and J are defined by:

    vector BI = 1/5 of vector BF
    vector CJ = 4/5 of vector CG

    The plan (EIJ) cuts line (HG) into K.

    1. Prove that line (EK) and line (FG) are parallele.

    Any suggestions on how to go about this?
  2. jcsd
  3. Aug 29, 2005 #2


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    Homework Helper

    I really don't think the problem you posted is correct. Please re-check the problem.
    Viet Dao,
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