如图,将
沿着直线l折叠,使点B落在点F的位置,若
,则
的度数是 _____ °.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b0c119677261211da2603f5c1b5029a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/82927c45-f277-4bdd-b4c5-e443aeaf433b.png?resizew=198)
更新时间:2022-10-25 22:12:57
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【推荐1】如图,把△ABC沿EF翻折,叠合后的图形如图.若∠A=60°,∠1=80°,则∠2的度数为_______ .
![](https://img.xkw.com/dksih/QBM/2020/4/17/2443310815993856/2443370389766145/STEM/5394876b9f8d4c93933ee6dfddb98492.png?resizew=108)
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【推荐2】如图,将等腰
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是锐角)沿
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【推荐1】将一块三角尺
按如图方式放置,使
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
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【推荐2】在
中,若
,
,则
是______ 三角形.(填“锐角”、“直角”、或“钝角”)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c52a89ed685d6b096c71fceab83cd7d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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