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直线和圆的方程是解析几何的基础知识,也是高考的必考内容,能力要求的层次大部分是“理解”“掌握”,学好这一部分内容会帮助同学们在高考中
Linear and circular equations are the basic knowledge of analytical geometry, and they are also required for the college entrance examination. Most of the required level of competence is “understanding” and “mastering.” Learning this part will help students in the college entrance examination.