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圆是初中几何知识的重要内容,也是中考考查的重点内容.在小学阶段已经学习了圆的有关概念,通过七、八年级的数学学习,我们也已经积累了大量的空间与图形的经验,通过折纸、对称、平移、旋转、推理等方法认识了图形的许多性质.在这一章的学习时,可充分利用已有的经验,充分利用以前学习几何图形的各种方法,去探索圆的有关性质,并利用这些性质去解决一些实际问题.本章在中考试题中考查内容主要有:1.重视基础知识的考查.主要考查内容有:①圆的有关概念和
The circle is an important part of junior high school’s geometric knowledge and is also the key content of the examination in the middle school.We have already learned the concept of the circle in the elementary school stage and through the mathematics study in the seventh and eighth grades we have also accumulated a great deal of experience in space and graphics Origami, symmetry, translation, rotation, reasoning and other methods to understand many of the properties of graphics in this chapter to learn, you can make full use of existing experience, make full use of previous geometry learning a variety of ways to explore the circle related Nature and use of these properties to solve some practical problems.The main content of this chapter in the examination questions in the examination are: 1. Focus on the examination of the basic knowledge.The main contents include: ① the concept of the circle and