边长为7,15,20面积为42的三角形abc中,能否找到点p,使得以p为顶点的三个三角形面积相等? 知乎 Template




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tomski边长为7,15,20面积为42的三角形abc中,能否找到点p,使得以p为顶点的三个三角形面积相等? 知乎 coloring