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众所周知,三角形的外心O、重心G、垂心H三点共线,且2OG=GH,此线叫做欧拉线.现在我们用三角形的三边来表示这三点间的距离.
As we all know, the outer triangle O, the center of gravity G, and the vertical center H are collinear, and 2OG=GH. This line is called Euler. Now we use the three sides of the triangle to represent the distance between these three points.