1.

Three vertices of a parallelogram ABCD are A(3,−1,2),B(1,2,−4)and C(−1,1,2). Which of the follwing could be the fourth vertex ?

Answer»

Three vertices of a parallelogram ABCD are A(3,1,2),B(1,2,4)and C(1,1,2). Which of the follwing could be the fourth vertex ?





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