三角形界心与其内旁重垂各心的距离４２２６００湖南绥宁县一中黄汉生如果三角形一边上的点和这边所对的顶点把这个三角形的周界分割为两条等长的折线，那么称这点为周界中点，连此点与相对顶点的线段叫做周界中线．定理１［１］三角形的三条周界中线相交于一点．这个点称... The distance between the center of the triangle circle and the heart of each side of it. 422600 Huang Hansheng, Yizhong County, Hunan Province. If the point on one side of the triangle and the apex on the side divide the perimeter of the triangle into two equal-length fold lines, then call this The point is the midpoint of the perimeter, and the line connecting this point to the opposite vertex is called the perimeter centerline. Theorem 1 [1] The three perimeters of a triangle intersect at a point. This point is called...