《立体几何》中“距离”的计算,是高考中命题的热点,其中点面距离是各种距离中的重点.本文就近年的高考题,谈谈其解法。一、定义法从平面外一点引这个平面的垂线,这个点和垂足间距离即为所求 The calculation of “distance” in “three-dimensional geometry” is a hot topic of the proposition in the college entrance examination. The point distance is the key point in various distances. This article discusses the problem of the college entrance examination in recent years and discusses its solution. First, the definition method draws a vertical line from the plane out of the plane. The distance between this point and the vertical foot is required.