如图,长方形纸片ABCD中,点E是CD的中点,连接AE.按以下步骤作图:①分别以点A和点E为圆心,以大于
的长为半径作弧,两弧相交于点M和点N;②作直线MN,且直线MN刚好经过点B.若
,则BC的长度是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1acac248e2a60467837666eb0c910749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377b5f7197e5bd1afeea4d931307956a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/20/ac5f6dab-923e-4a60-a4cf-1689127404aa.png?resizew=183)
更新时间:2023-06-18 13:30:43
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