立体几何中有关点、线、面的距离和角有以下的一些与最值有关的性质 :性质 1:两条异面直线的距离 ,是这两条异面直线上各取任意一点的所有连线段的长度的最小值 .一般地 ,立体几何中点、线、面的各种距离 ,是相应点、线、面上各取任意一点的连线段的长度的最小值 .性质 2 :斜线 The distances and angles related to points, lines, and surfaces in the three-dimensional geometry have the following properties related to the most value: Property 1: The distance between two straight lines of different sides is all the links of arbitrary points on these two lines. The minimum value of the length of a line segment. In general, the various distances of points, lines, and surfaces in a solid geometry are the minimum values ​​of the lengths of the connecting segments corresponding to any point on a corresponding point, line, or surface. Property 2: oblique line