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高中数学新教材中引进了空间向量的概念和知识,拓宽了解答立体几何问题的思路和方法.对于一些特殊的图形,如正方体、长方体、正四棱柱、直三棱柱、正三棱锥、正四棱锥以及其它特殊图形等,通过建立空间直角坐标系,应用空间向量的知识和方法,可以使解决几何问题数量化、程序化,同时,又可以减少辅助线的条数和辅助面的个数,
Introduced the concept and knowledge of space vector in high school mathematics new teaching material, broadened the way and method of solving the problem of solid geometry.For some special graphics, such as cube, cuboid, regular quadrangular prism, straight triangular prism, regular pyramid, regular pyramid and other Special graphics and so on. By establishing the space rectangular coordinate system and applying the knowledge and method of space vector, it is possible to quantify and program the geometric problems and at the same time, reduce the number of auxiliary lines and the number of auxiliary surfaces,