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[几何] Yff点

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hejoseph posted 2023-1-15 17:12 |Read mode

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Yff点.pdf (66.45 KB, Downloads: 68)

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isee posted 2023-1-15 23:21

第一次见这个点

isee=freeMaths@知乎

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hbghlyj posted 2023-1-17 07:41

Wikipedia–Yff center of congruence
MathWorld–Yff Points
Recently Discovered Triangle Centers–yffcc

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