如图,在三角形
中,F为
延长线上一点,直线
经过点B,写出一个能判定
的条件__________ .(写出一个即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39addc1173a458af87ed5c5e3f06466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c3867de5c1ffc9d2216aed52ec3b3f.png)
更新时间:2024-05-16 09:50:56
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【推荐1】已知∠1=40°,则∠2=_________ °时,直线a,b平行.
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【推荐1】如图,当∠1=∠_____ 时,AB∥CD;当∠D+∠_____ =180°时,AB∥CD;当∠B=∠_____ 时,AB∥CD.
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【推荐2】在横线上填空,并在括号内填写理由.
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___________( )
![](https://img.xkw.com/dksih/QBM/2019/2/21/2145287741169664/2147827012403200/STEM/f58c0e095454407696ceae93e66050c9.png?resizew=110)
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