您好,欢迎访问三七文档
当前位置:首页 > 商业/管理/HR > 资本运营 > 用-三线合一基本型-巧引辅助线解平面几何问题
19984()OJRNALOFTONGHtJATEACHERSC()LlGE19984(13O0(),,,,,,.,.,.,,,,.1,,,,.1,AI3C,ABAC,1=2AlBC;ADBC,D,1=/2BDIX;BD=IX{,1=2,A)BC,:¹12,ºAl)BC,»IAB=AC,BD=IX.,¹º»,..21ABC,Bl)ABC,AEBl)E,BAE=C+1AE.__{,,AE.3,AFBCDAE,AFBC+DAE,BAE=AFB,.FEljAEBCFABEF13E{2jBELBEA=BEF..A13EFI3E(ASA)..BAE=BFE.BFE=C+DAE../BAE=C+/1)AE2:ABCA=9,AB=ACBI,CEBDBl)E.13D=ZCE.__,,CECFZCE,5BD=ZCEBD=CF,,.CEBAFBEFBEC12BE=BEBEF=BEC=900.BEF,BEASA)..EF=CECF=ZCE.1+F=903+F=900..3=1ABDACF41=3ABACBACCAF90K||||..A13DACF(ASA)..BD=CF.BDZCE3AM//BN,ABE,EAMD,BNC,ABADBC.AEBE_,,AEBN,7AB=BFBF=CF+BCAB=CFBC,Al)CF.AEEF,Al)EFCE..............43C=3C,ADAlr,BM,M.BM=(ACAB).,,,,,,BMAC,AN=ABBM=MNNC=ACABBM=BNBM=(ACz)BNNCABN=ANBA3C=3C3=C.,,.()85B,CBAC,DE,FBC:DFEF10,,CEAB11.AM=ACCEME~~,~~_.~_,~_~.,.__/,1~,~~~~BM=3ACBFFCEF//BM12J~~~/~~~~=2/~~~,,BDAC,.13.ANABBDNC=ABACBFCF.,,~~//1~,~~,,,~,Lr//~111!1=IVll1()1011126ABC,BC=3AB,BDABCAC0,CDBD,DOBOD14,(BA,.15,BE=BC,ED=CDBC=3ABAE=ZABAEF,FD,FD//AC71A13AFOB=01.()AO1415713CDACABC,A13ZAC,BAC,ADBD,.BD16,»,ABE,DE,DEA3E,.17,..~~,__._1,~_,~.~,.~.,.~~~DEAI3,AEAB.AB=ZACAE=AC,~,J~~2~z,~~~~AEDACD.A13E,1)E,A13=ZAE.AB=ZAC..AE=AC.Al=Bl).AE=BE.1)EABAEI)=900AEIACIAE=ACl/2LAI)Al)..AEDACI)(SAS)..AED=ACI)=900..CDAC1617D7,,,.813AD=BCD=900EFACBD,EFAC18,AE=ECEFAC,,AFCF.19,AF=CF,BADBCI)=90BFFl)72AF,CF.BAI=13CI900BF=DF()..AF=BD..AF=CF.AE=CE..EFACCF=Bl)19C8.,(53)4,.,,.,,,.5,,,.,.,,.,,..,..,,.
本文标题:用-三线合一基本型-巧引辅助线解平面几何问题
链接地址:https://www.777doc.com/doc-3719721 .html