• 已知矩形中,,将沿着折成的二面角,则两点的距离为 :middle;" src="http://tikucommon-zs.oss-cn-beijing.aliyuncs.com/tiku/source/image/12320/swd00819147.png">试题及答案-填空题-云返教育

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      已知矩形中,,将沿着折成的二面角,则两点的距离为         :middle;" src='http://tikucommon-zs.oss-cn-beijing.aliyuncs.com/tiku/source/image/12320/swd00819147.png'>

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