Question: The parallelogram shown below has vertices at A(2, -1,4), B(1,0,-1), C(1,2,3), and D. D A(2, -1, 4) CI, 2, 3) B(1, 0, -1) Determine

The parallelogram shown below has vertices at A(2, -1,4), B(1,0,-1), C(1,2,3), and

The parallelogram shown below has vertices at A(2, -1,4), B(1,0,-1), C(1,2,3), and D. D A(2, -1, 4) CI, 2, 3) B(1, 0, -1) Determine the following: a) the coordinates of D. b) the cosine of the interior angle at B. c) the area of the parallelogram. d) an equation for the plane of the parallelogram.

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