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二面角是高中立体几何的一个重要概念,求二面角的平面角问题是高考的热点,也是立体几何中的难点,近年的高考题中几乎都出现了二面角的求解问题.本文结合高考题,来谈谈求解二面角的几种传统方法.
The dihedral angle is an important concept of high school solid geometry. The problem of dihedral angle is the hot spot of college entrance examination and also the difficulty in solid geometry. In recent years, almost all the dihedral problems appear in the college entrance examination questions. Entrance exam, to talk about the solution to the dihedral angle of several traditional methods.