Friday, August 13, 2010

Question four by Tam Wai Hang

BFED has 4 sides, so it is a quadrilateral.
BF//ED and BE//FD
BF=ED and BE=FD
<BFE=<EFD, making the figure a parallelogram.

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1 comment:

  1. Lim Hao YangAugust 13, 2010 at 3:12 PM

    According to your diagram, you assume that AB = BE = DF = CD. However, this does not work for all cases. If you do refer to my diagram, AB = CD, BE = DF, AB ≠ BE.

    Hao Yang

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