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[几何] $AH_2∥HH_1$

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hbghlyj Posted 2020-6-19 17:43 |Read mode

Last edited by hbghlyj 2020-6-19 17:52ABC的外心,垂心为O,H,直线BP,CP分别交直线CA,AB于E,F,△AEF,PEF的垂心是$H_1,H_2$，使得$AH_2∥HH_1$的点的集合为S
O∈S
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Author| hbghlyj Posted 2020-6-19 17:51

扫描出来是这个样子

等面三面角.gif

是用这个扫描的

QQ图片20200619174935.png

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