Question 1172390
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The symbol [A x B] in this context means the vector product of vectors A and B.



Quantitatively, it is the same as the product of the ADGACENT side lengths |A| and |B| by the sine of the angle between the sides.


    area of a parallelogram = {{{abs(A)*abs(B)*sin(gamma)}}}.
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By the way, &nbsp;parallelogram has &nbsp;SIDES. &nbsp;&nbsp;Parallelogram has no edges.