[数学建模小论文]
【摘要】空间角是立体几何中一个重要概念，它是空间图形的一个突出的量化指标，是空间图形位置关系的具体体现。解决立体几何问题的关键在于“三定”：定性分析→定位作图→定量计算，其中定性是定位、定量的基础，而定量则是定位、定性的深化。在面面关系中，二面角是其中的重要概念之一，它的度量归结为平面上角的度量，一般来说，对其平面角的定位是问题解决的先决一步，故对二面角的平面角的定位是关键。
【关键词】平面角；定性分析；定位作图；定量计算;点;垂线段;垂平面Positioning Analysis on the dihedral angle of
【Abstract】Three-dimensional geometry of space angle is an important concept, which is a prominent space graphics quantitative indicators, the relationship between spatial location of a concrete embodiment of graphics. Three-dimensional geometry to solve the problem lies in "determining three things": a qualitative analysis → location mapping → quantitative calculation, which is the location of qualitative and quantitative basis and is the location of quantitative, qualitative in depth. In all things relationship, the dihedral angle is one of the important concepts in one, it comes down to flat top corner of the metric measurement, in general, their plane angle positioning is a prerequisite step in problem-solving, so pairs of dihedral angle The plane angle positioning is the key.
【Key words】Plane angle;Qualitative analysis;Locationmapping;Quantitative calculation;Point;Vertical section;Vertical plane1
二面角的平面角的特征
α、β是由 出发的两个半平面,O是l上任意一点……
<<<<<全文未完，本文约2242个中文字，未计算英文字母、数字>>>>>
|
|
