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[几何] The Nine-point Conic and a Pair of Parallel Lines

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hbghlyj Posted at 2024-9-28 17:05:25 |Read mode

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 Author| hbghlyj Posted at 2024-9-28 17:11:04

手机版Mobile version|Leisure Math Forum

2025-4-20 12:21 GMT+8

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