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[几何] 内心旁心外接圆

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hbghlyj Posted 2019-7-30 22:47 |Read mode
Last edited by hbghlyj 2021-6-1 04:493051
I,$I_C$分别是△ABC的内心和C-旁心,点T在△ABC的外接圆$c_1$弧ACB上,作圆$c_2$使其与$c_1$外切于T,且与AB切于X,设$I_C$X,IX再次交$c_2$于$Y_C$,Y,过$Y_C$,Y作切线交于C',求证(1)CC'X共线(2)当C在$c_1$上运动时,C'的轨迹是与$c_2$相切的圆

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 Author| hbghlyj Posted 2021-6-1 04:27
帖吧是防盗链的,不能直接用链接...当年...
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