area of parallelogram given vertices cross product

of the cross product is the positive area of the parallelogram

小数v parallelogram [0405p03r0504lel05ɡr03m] n.

area of a parallelogram

arrow /'03r0503/ 箭头形cross /kr08s/十字架形crescent /'k

why i hate the definition of trapezoids (again)

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