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[几何] △PAB,△PBC,△PCA的内切圆半径相等

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hbghlyj posted 2021-6-8 20:33 |Read mode
如果P是△ABC的垂心,那么,△PAB,△PBC,△PCA的外接圆半径相等.
寻找另外一个点P,使得△PAB,△PBC,△PCA的内切圆半径相等.

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爪机专用 posted 2021-6-8 21:22
没记错的话三内切圆相等是尺规不可作的

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original poster hbghlyj posted 2021-6-9 19:25
回复 2# 爪机专用
能否提供相关资料

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