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,...

 

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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. 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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