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original poster: kuing

[几何] 来自人教论坛的圆内定点对弦张角垂直求弦长范围

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original poster kuing posted 2013-12-19 14:48
回复 20# 其妙

嗯,这样挺好,不过其实可以合起来写,更简洁

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hbghlyj posted 2024-3-25 20:45
乌贼 发表于 2013-12-18 05:42
圆的第三定义:到两定点距离的平分和为定值的点的轨迹。
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     圆的第三定义:到两定点距离的平和为定值的点的轨迹。

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