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[几何] 二次曲线过曲线系四个定点之二，另外两点为对合对应点

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hbghlyj posted 2025-4-20 00:42 |Read mode

conic_e定理3.12
把两个公共点射影到两个圆环点，用根心定理。
mathworld.wolfram.com/ThreeConicsTheorem.html

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2025-6-8 06:51 GMT+8

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