一、方法策略概述在高考试卷中,立体几何解答题主要考查线面位置关系的判定或证明、角与距离的计算,一般属于中档题.立体几何证明题包括线面、面面的相交(特殊情形是垂直)和平行,需要掌握相应的判定定理和性质定理.这些定理加上相关的概念和公理,成为推理的理论依据.几何法证明的策略是:由条件想性质,据结论忆判定.即当条件中已知某种位置关系时,就想想相应的性质定理,当结论中要证明某种位置关系时,就想想相应的判定定理,以使我们在复杂的图形及杂乱的 First, the method strategy overview In the college entrance examination papers, three-dimensional geometry to answer questions mainly to determine the relationship between line surface to determine or prove that the calculation of angle and distance, usually belonging to the mid-range questions. The situation is vertical) and parallel, need to grasp the corresponding decision theorem and the nature of the theorem.These theorems plus the related concepts and axioms become the theoretical basis for reasoning.Geometry method of proof is: the nature of the conditions, according to the conclusions of the remembrance. That is, when the condition is known to some kind of positional relationship, think about the corresponding property theorem, when the conclusion to prove a certain positional relationship, think about the corresponding decision theorem so that we in the complex graphics and clutter