求高中数学竞赛有关圆的定理及推论? 求关于初三数学圆的所有定理及其推论,急~~~

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\u301001\u3011Newton\u5b9a\u7406
\u301002\u3011\u83ab\u96f7\uff08F. Morley\uff09\u5b9a\u7406
\u301003\u3011\u5bc6\u514b\uff08Miquel\uff09\u70b9
\u301004\u3011Fermat\uff08\u8d39\u5c14\u9a6c\uff09\u70b9
\u301005\u3011\u6b27\u62c9\uff08Euler\uff09\u7ebf
\u301006\u3011\u725b\u987f\uff08Newton\uff09\u7ebf
\u301007\u3011\u65af\u7279\u74e6\u5c14\u7279\uff08Stewart\uff09\u5b9a\u7406
\u301008\u3011\u6258\u52d2\u5bc6\uff08P'tolemy\uff09\u5b9a\u7406
\u301009\u3011\u897f\u59c6\u677e\uff08Simson\uff09\u5b9a\u7406
\u301010\u3011\u53cd\u6f14
\u301011\u3011\u5782\u5fc3\u7ec4\u5b9a\u7406
\u301012\u3011\u9762\u79ef\u539f\u7406
\u301013\u3011\u5357\u5317\u6781
\u301014\u3011\u8774\u8776\u5b9a\u7406
\u301015\u3011\u201c\u9e21\u722a\u201d\u5b9a\u7406
\u301016\u3011\u201c\u9e2d\u722a\u201d\u5b9a\u7406
\u301017\u3011\u585e\u74e6\uff08Ceva\uff09\u5b9a\u7406
\u301018\u3011\u4e5d\u70b9\u5706
\u301019\u3011\u65af\u5e93\u817e\uff08Schooten\uff09\u516c\u5f0f\uff08\u89d2\u5e73\u5206\u7ebf\u957f\u516c\u5f0f\uff09
\u301020\u3011\u5916\u89d2\u5e73\u5206\u7ebf\u957f\u516c\u5f0f
\u301021\u3011\u9006\u5e73\u884c\u7ebf\uff08antiparallels\uff09
\u301022\u3011\u5e73\u65b9\u5dee\u539f\u7406
\u301023\u3011\u5e73\u65b9\u548c\u539f\u7406
\u301024\u3011\u5f20\u89d2\u5f15\u7406
\u301025\u3011Euler\u6052\u7b49\u5f0f
\u301026\u3011\u8c03\u548c\u56db\u8fb9\u5f62
\u301027\u3011\u914d\u6781
\u301028\u3011\u8c03\u548c\u70b9\u5217
\u301029\u3011\u76f8\u4ea4\u5f26\u5b9a\u7406\u3001\u5207\u5272\u7ebf\u5b9a\u7406
\u301030\u3011\u5916\u5fc3\u548c\u5782\u5fc3
\u301031\u3011\u5706\u5e42\u548c\u6839\u8f74
\u301032\u3011\u5b8c\u5168\u56db\u8fb9\u5f62\uff08\u56db\u7ebf\u5f62\uff09

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\u3016\u6709\u5173\u5706\u7684\u57fa\u672c\u6027\u8d28\u4e0e\u5b9a\u7406\u3017

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\u3016\u6709\u5173\u5706\u7684\u8ba1\u7b97\u516c\u5f0f\u3017

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\u3016\u5706\u7684\u89e3\u6790\u51e0\u4f55\u65b9\u7a0b\u3017

\u5706\u7684\u6807\u51c6\u65b9\u7a0b\uff1a\u5728\u5e73\u9762\u76f4\u89d2\u5750\u6807\u7cfb\u4e2d\uff0c\u4ee5\u70b9O\uff08a\uff0cb\uff09\u4e3a\u5706\u5fc3\uff0c\u4ee5r\u4e3a\u534a\u5f84\u7684\u5706\u7684\u6807\u51c6\u65b9\u7a0b\u662f\uff08x-a\uff09^2+\uff08y-b\uff09^2=r^2\u3002

\u5706\u7684\u4e00\u822c\u65b9\u7a0b\uff1a\u628a\u5706\u7684\u6807\u51c6\u65b9\u7a0b\u5c55\u5f00\uff0c\u79fb\u9879\uff0c\u5408\u5e76\u540c\u7c7b\u9879\u540e\uff0c\u53ef\u5f97\u5706\u7684\u4e00\u822c\u65b9\u7a0b\u662fx^2+y^2+Dx+Ey+F=0\u3002\u548c\u6807\u51c6\u65b9\u7a0b\u5bf9\u6bd4\uff0c\u5176\u5b9eD=-2a\uff0cE=-2b\uff0cF=a^2+b^2\u3002

\u5706\u7684\u79bb\u5fc3\u7387e=0\uff0c\u5728\u5706\u4e0a\u4efb\u610f\u4e00\u70b9\u7684\u66f2\u7387\u534a\u5f84\u90fd\u662fr\u3002

首先是简单的,也是最基本的三大定理:托勒密定理 梅内劳斯定理和塞瓦定理;其次是稍微基本的:蝴蝶定理,西姆松定理,牛顿定理等等再次是阅卷老师都未必知道的定理,大多不可以直接用:来摩恩定理(Lemoine)(过三角形的三个顶点作其外接圆的切线,与对边延长线的三个交点共线)卡诺定理(Carnot)(在△ABC外接圆上作一点P,过P引与三边BC、CA、AB分别成同向等角的直线PD、PD、PF,与其三边或其所在直线的交点分别为D、E、F,则D、E、F共线。)清宫定理(设P、Q为△ABC的外接圆上异于A、B、C的两点,P关于三边BC、CA、AB的对称点分别是U、V、W,且QU、QV、QW分别交三边BC、CA、AB或其延长线于D、E、F,则D、E、F在同一直线上。)帕斯卡定理(Pascal)(圆内接六边形的三双对边(所在直线)的交点共线。)奥倍尔定理(Opial)(奥倍尔定理:通过△ABC的三个顶点引互相平行的三条直线,设它们与△ABC的外接圆的交点分别是L、M、N,在△ABC的外接圆取一点P,则PL、PM、PN与△ABC的三边BC、CA、AB或其延长线的交点分别是D、E、F,则D、E、F三点共线 。)布利安双定理(Brianchon)(设一六角形外切于一条圆锥曲线,那么它的三双对顶点的连线共点。)。。。。。。。。。。。。。。。。。。。。太多了,有什么问题直接问我吧。。。。。。

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