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高考对于直线与圆的考查,主要是以选择题和填空题的题型出现,个别地区如江苏省,因为在考试大纲中把直线与圆的方程作为高考的必考内容,因此也常设计直线与圆的解答题。从试题考查的知识点来看,包括直线与圆的方程、两条直线的位置关系、点到直线的距离、直线与圆的位置关系、圆与圆的位置关系等。从试题的内容来看,包括对称、定点、定值、最值等问题。根据对近三年高考试题的统计,以及学情调研情况,学生的解题困难可以归结为如下三个方面:(1)对题意理解不深刻,看不透隐含的“对称”“位
College entrance examination for straight lines and rounds, mainly in the multiple choice questions and fill in the blank question type appeared in some areas such as Jiangsu Province, because in the syllabus outline of the line and the circle as the college entrance examination must be content, it is often designed straight Question answer with round solution. From the knowledge of test questions, including the equation of line and circle, the position of two lines, the distance from point to line, the relationship between line and circle, the relationship between circle and circle. From the content of test questions, including the symmetry, fixed-point, fixed value, the most value and other issues. According to the statistics of college entrance examination exams in the past three years and the situation of academic research, students’ difficulties in solving problems can be attributed to the following three aspects: (1) Insufficient understanding of the questions and implicit ”“ symmetry ” "Bit