| 交比在初等几何中的应用 |
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| 引用本文： | 娄国久,赵岗.交比在初等几何中的应用[J].山东教育学院学报,2009,24(1):62-64. |
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| 作者姓名： | 娄国久 赵岗 |
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| 作者单位： | 山东教育学院数学与应用教学系,山东,济南,250013 |
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| 摘 要： | 本文首先给出交比的定义、性质,然后分析交比在初等几何中的应用范围、基本方法、应用技巧,最后通过典型例题加以论证。
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| 关 键 词： | 交比 射影几何 初等几何 蝴蝶定理 |
The Application of Cross Ratio |
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| Lou Guojiu,Zhao Gang.The Application of Cross Ratio[J].Journal of Shandong Education Institute,2009,24(1):62-64. |
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| Authors: | Lou Guojiu Zhao Gang |
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| Institution: | Department of Mathematics and Applied Mathematics of Shandong Institute of Education;Jinan 250013;China |
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| Abstract: | In this paper,we give the defition and charachater of cross ratio firstly;then we analysis it's range of application,basic method and the skill of application;Lastly,we prove them by tipical case. |
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| Keywords: | Cross Ratio Projective Geometry Elementary Geometry Butterfly Theorem |
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