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近几年各类几何图形考试在注重考查基础知识的同时,更注重考查具体情境中对相关几何图形、几何应用的分析与问题的解决,恩格斯说:“数学中的变换,不是无聊的游戏,而是解决实际问题的杠杆”.在证或解有关几何题时,有时候不能直接解答,若能根据几何图形的性质、特征(变换、对称、特殊性、分类)及方法与技巧,将陌生的、未知、难以解决的、不规则图形转化为
In recent years, various types of geometry exams focus on examining the basic knowledge, but also pay more attention to the analysis of relevant geometrical and geometric applications and the resolution of problems in specific situations. Engels said: “The transformation in mathematics is not a boring game. , but to solve the actual problem of the lever ”. In the test or settlement of geometric problems, sometimes can not be directly answered, if you can according to the nature of the geometry, characteristics (transformation, symmetry, particularity, classification) and methods and techniques, Turn unfamiliar, unknown, difficult to solve, irregular graphics into