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圆在初中数学体系中处在核心地位,是中考的重头戏,占题量的15%~20%。有选择题、填空题、解答题、作图题(包括阅读理解题、开方探索题)。圆与三角形、方程、函数等知识点相结合可构成内容丰富、题型新颖、构思精巧的综合性试题,成为中考的热点。因此,解题时先要由条件对图形有比较好的认识,再联想相关知识,分析隐含条件,将做题过程化解为若干小问题,逐一解决。
Circle in the junior high school mathematics system at the core, is the highlight of the senior high school entrance examination, accounting for 15% to 20%. There are multiple-choice questions, fill in the blank questions, answer questions, drawing questions (including reading comprehension questions, prescribing exploration questions). Circles and triangles, equations, functions and other knowledge points can be combined to form a rich content, new questions, sophisticated ingenious comprehensive test questions, become a hot spot in the exam. Therefore, when solving the problem, we must first understand the graphic from the conditions better, and then associate the relevant knowledge, analyze the implicit conditions, and resolve the problem-making process into several small problems and solve them one by one.