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Three consecutive vertices of a parallel...

Three consecutive vertices of a parallelogram are ( 1 , 2, - 4) , ( -1 , 1, 2) , ( 1 , - 2 , 8) , find the coordinates of fourth vertex .

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The correct Answer is:
( 3 , - 1 2)
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CHHAYA PUBLICATION-INTRODUCTION TO THREE-DIMENSIONAL COORDINATE GEOMETRY -Very Short Answer Type Questions
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