已知三角形的顶点分别是A(4,4).B(-1,1).C(6,-2).G为三角形ABC的重心,求三角形ABG的面积
人气:360 ℃ 时间:2020-10-02 02:46:25
解答
由重心的坐标公式可得G(3,1),所以BG//x轴
|BG|=4,A到BG的距离为3,所以△ABG的面积为6.
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