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圆是九年级几何中的重要学习内容之一,对培养学生的分析能力、逻辑推理能力、解决问题能力有着重要作用。圆的知识是中考必考内容,从基础知识检测到综合解题能力的考查都出现在中考数学试卷中,题型以填空题、选择题和解答题为主,也有以阅读理解、条件开放、结论开放探索题作为新的题型,分值一般是6-12分。由圆和直线型图形,圆和函数图象可以组合成一些复杂的几何题;由圆的重要性质和平面直角坐标系、函数、方程、面积等知识就组
The circle is one of the important learning contents in the ninth grade geometry, which plays an important role in cultivating students’ analytical ability, logical reasoning ability and problem solving ability. Round knowledge is the exam will be the content of the exam, from basic knowledge to test the comprehensive problem-solving ability examinations appear in the math test papers, questions to fill in the blank, multiple-choice questions and answer questions mainly, but also to reading comprehension, the conditions open, the conclusion Open exploration questions as a new type of question, the score is generally 6-12 points. From the circular and linear graphics, the circle and the function of the image can be combined into some complex geometric problems; the important nature of the circle and the plane Cartesian coordinate system, function, equation, area, etc. knowledge on the group