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[几何] 如何解释Q点的轨迹是直线段？

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shidilin posted 2019-1-17 15:24 |Read mode

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如何解释Q点的轨迹是直线段？谢谢！

道运天地宽丹心照气圆

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游客 posted 2019-1-17 16:33

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关注点Q在底面的投影和点Q到底面的距离。

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original poster shidilin posted 2019-1-17 16:54

回复 2# 游客

谢谢，答复！

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敬畏数学 posted 2019-1-18 13:05

回复 2# 游客
出手不凡！1#的答案很搞。

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