异面直线的距离是指异面直线公垂线段的长度。求异面直线的距离时,这条公垂线段有时能在图形中作出,有时不容易找到。在找不到公垂线段的情况下我们考虑问题的转化,能否把异面直线的距离转化成点到平面的距离、平行平面间的距离,或者用函数的方法求解。现用一具体 Discrepancy The distance of a straight line refers to the length of a section of a straight line perpendicular to the plane. Find the distance of a straight line from the surface, the public vertical line sometimes made in the graphics, and sometimes not easy to find. When we can not find the common vertical line segment, we consider the transformation of the problem. Can we transform the distance of the straight line from a straight line to a point-to-plane distance or the distance between parallel planes or solve it by a function? Use a specific