立体几何中的空间距离(指点线距离,点面距离,线面距离,异面直线距离及平行平面距离;下同)是用数量刻划点、线、面的空间位置关系,也是空间垂直关系的运用和拓展,在立体几何中有着重要的地位.由于空间距离涉及到诸多的线与线,线与面、面与面的垂直关系,求空间距离成为了学习几何 The spatial distances in three-dimensional geometry (pointing line distances, point distances, line surface distances, non-linear line distances, and parallel plane distances; the same applies hereinafter) are the spatial relationships between points, lines, and planes, as well as spatial vertical relationships. The use and development of the three-dimensional geometry have an important position in the three-dimensional geometry. Because the spatial distance involves many lines and lines, vertical lines and the vertical relationship between surface and surface, the spatial distance has become a learning geometry.