解析几何是中学数学重要知识点之一,也是高考重点考查方面.由于平面向量既能体现“形”的直观特征,又具有“数”的运算性质,在解决解析几何问题时,充分利用平面向量知识,数形结合,使所要研究的问题简单化,从而达到事半功倍的效果. Analytic geometry is one of the important knowledge points in middle school mathematics and also the key aspect of college entrance examination.As plane vectors can not only reflect the visual characteristics of “shape ”, but also have the computing properties of "number Make full use of knowledge of plane vectors, the combination of number and shape, so that the problem to be studied simplifies, so as to achieve a multiplier effect.