摘要
本文给出了点、直线、平面相互间对称图形的向量表达式及其应用。
In this paper,the author gives the vector expression of the symme- tric figure for a point,a straight line and a plane,and its application.
关键词
点
直线
平面
对称
向量
解析法
point
straight line
plane
symmetry
position vector of the vertical projection's point
position vector of the symmetric point
