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[几何] 蚌线的法线

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hbghlyj posted 2022-6-3 02:19 |Read mode
Last edited by hbghlyj 2023-1-10 13:16在极点为A,定长线段BD的蚌线上取一点C,点C到渐近线的垂足为H,在CA上截取CF=CH.
设CA与渐近线交于E.
过F作直线平行于AB,在这条直线上截取FG=AE.
则CG为蚌线的一条法线.



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