利用空间向量的坐标运算解立体几何问题,可把抽象的几何问题转化为代数计算问题,并具有很强的规律性和可操作性,因此,在解立体几何问题时被人们广泛应用,但建立空间直角坐标系往往受到图形的制约,很难在立体几何问题中普遍使用,其实,向量的坐标形式只是选取了特殊的基底,在一般情况下,根据题意在立体几何 The use of spatial vector coordinates to solve the three-dimensional geometry problem can transform the abstract geometric problem into an algebraic computation problem. It has strong regularity and operability. Therefore, it is widely used in the solution of the three-dimensional geometric problem, but it is established. Spatial Cartesian coordinates are often constrained by graphics and are difficult to use in general in solid geometry problems. In fact, the vector coordinate format only selects a special base, and in general, it is based on the meaning of the geometry