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As shown in the figure, in the plane rectangular coordinate system xoy, given the points a (- 1,5), B (- 1,0), C (- 4,3) (1), we can calculate the area of ABC
As shown in the figure, in the plane rectangular coordinate system xoy, given the points a (- 1,5), B (- 1,0), C (- 4,3) (1), we can calculate the area of ABC
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