空间距离的概念及其计算是立体几何的重要知识点,也是高考必考内容之一,立体几何中的距离,主要包括点到平面的距离,异面直线的距离,直线与平面的距离等.尽管这些距离的含义各不相同,但都可以通过适当的手段最终转化为平面上的两点之间的距离来计算.其基本方法和步骤是:①找出或作出有关距离的图形;②证明它符合定义;③在平面图形内计算.简单地说:求空间距离都要按照“一作,二证,三算”的步骤来完成,即寓证明于运算之中.本文就近年来高考中有关距离问题的三大热点例谈如下,供复习时参考. The concept of spatial distance and its calculation is an important knowledge of solid geometry, but also one of the college entrance examination content, the distance in three-dimensional geometry, including the point-to-plane distance, the distance of a straight line with a straight line, the distance between the plane and the plane. Although these distances have different meanings, they can be calculated by finally converting the distance between two points on a plane by the appropriate means. The basic methods and steps are: (1) to find or make a graph of the distance; (2) to prove It complies with the definition; ③ Calculated in the plane graph. Simply put: Find the distance in space should be completed in accordance with the steps of “one for the second card, three calculations” The three hot spots on the issue of distance as follows, for reference when reviewing.