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面面夹角是二面角的平面角吗？

2025-03-14 22:41:09

推荐回答（2个）

回答1：

面面夹角是二面角，二面角的大小用二面角的平面角来表示。二面角只有一个，而二面角的平面角可以有无穷多个，它们的大小都一样。所以，二者不是一回事。

回答2：

作出棱的一个垂面，垂面在两个平面上的交线成的角就是二面角的平面角

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