《全日制义务教育数学课程标准(实验稿)》(以下简称《课标》)要求,随着学生学习经验的积累和研究能力的发展,教师应逐步提高学生探究性水平的层次,为学生完善学习方式提供有利的条件.因此,近几年各地中考题大多采取了学生比较熟悉的图形,以学生探究为主,通过逐步加大难度来考查学生分析问题和解决问题的能力.三角板就是各地命题 The “Mathematics Curriculum Standard for Full-time Compulsory Education (Experimental Draft)” (hereinafter referred to as the “Course Standard”) requires that, with the accumulation of students’ learning experience and the development of research capabilities, teachers should gradually improve the level of student’s inquiry level and improve the students. The learning methods provide favorable conditions. Therefore, in recent years, most of the examination questions in various places have adopted familiar graphics for students, focusing on student exploration, and gradually increasing the difficulty to examine students’ ability to analyze problems and solve problems. Triangle is the proposition