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自从江西省自主命题以来,立体几何解答题一直处于第20题(文理都是),立体几何要求学生必须具备一定的空间想象能力及添辅助线能力,所以一直是高考的一个难点。学生利用传统的方法解决立体几何解答题的往往感到困难,但是利用向量法来解决就比较简单,而且纵观江西省近五年的立体几何解答题,都
Since the independent proposition of Jiangxi Province, the three-dimensional geometry solution has always been the 20th (the liberal arts are), three-dimensional geometry requires that students have to have some spatial imagination and Tim auxiliary ability, it has been a difficult college entrance examination. Students use traditional methods to solve the problem of three-dimensional geometry is often difficult, but the use of vector to solve is relatively simple, and look at the past three years in Jiangxi Province, three-dimensional geometric solution to questions, all