论文部分内容阅读
求二面角的平面角既是高考考查的重点,也是同学们学习的难点,另一方面由于近几年高考在命题立意上注重从整体的高度和思维价值的高度设计问题,进一步加强了对中学数学知识中所蕴含的数学思想方法的考查,从而使得高考中的二面角计算问题更是蒙上一层神秘面纱,使得同学们对该问题望而却步．本文拟从转化的角度探讨如何计算二面角的平面角．
The plane angle of seeking dihedral angle is not only the focus of the college entrance examination, but also the difficulty for the students to learn. On the other hand, in recent years, the college entrance examination emphasizes on the propositional design from the height of the overall height and the design value of the thinking value, and further strengthens the secondary school. The examination of mathematics thoughts contained in mathematics knowledge makes the calculation of the dihedral angle in the college entrance examination even more a layer of mystery, which makes the students deter from the question. This article intends to discuss how to calculate the plane angle of a dihedral angle from the perspective of transformation.