随着高考改革的不断深入,要求学生从以前的应试教育中解脱出来,逐步适应从应试教育向素质教育的过渡,培养能力向实践性和操作性转化,并且要求教师注重规律总结,提倡一题多解和多题一解的思想方法,培养学生的数学思维能力,从近几年的高考中立体几何命题经常考查线线角和线面角问题,而且难度较以前有所加大, With the continuous deepening of college entrance examination reform, students are required to be freed from the previous exam-oriented education, and gradually adapt to the transition from exam-oriented education to quality education, to cultivate the ability to practical and operational transformation, and require teachers to focus on the law, advocate a Multi-solution and multi-topic solution of the ideas and methods to cultivate students’ mathematical thinking ability, from the recent years of college entrance examination geometric geometry proposition often check the line angle and line angle, and more difficult than ever before,