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November 25, 2014

November 25, 2014

Posted by **Dwight** on Friday, October 1, 2010 at 1:09pm.

Could someone please tell me to go about solving this question. Thanks a lot.

- Math -
**MathMate**, Friday, October 1, 2010 at 1:42pmCalculate vector BA and add it to point C to get point D, similar to sliding the line BA until it fits on C.

Vector BA

= coordinates of A - coordinates of B.

=(1,-2,4) - (3,5,7)

=(-2,-7,-3)

You can take it from here.

Do check your calculations by comparing the mid-points of AC and BD. They should be identical since the diagonals of a parallelogram bisect each other.

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