如图,AD平分∠BAC,DE∥AB交AC于E,DF⊥AB于点F,若∠BAC=30°,AE=2,则DF的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/12/0e2b0b6b-5121-45f1-9f4e-71b4963e90cc.png?resizew=168)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/12/0e2b0b6b-5121-45f1-9f4e-71b4963e90cc.png?resizew=168)
A.![]() | B.1 | C.![]() | D.2 |
18-19八年级上·湖北黄冈·期末 查看更多[4]
湖北省黄冈市2018-2019学年八年级上学期期末数学试题安徽省合肥市高新区2021-2022学年八年级上学期期末数学试题(已下线)吉林省白城市镇赉县2023-2024学年八年级上学期数学期末试题吉林省白城市镇赉县2023-2024学年八年级上学期期末数学试题
更新时间:2020-01-08 15:48:05
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【推荐1】如图,OP平分∠MON,PA⊥ON于点A,点Q是射线OM上的一个动点,若PA=2,则PQ的最小值为( )
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【推荐2】如图,
中,
,
的平分线
和
的外角平分线
相交于点
,分别交
和
的延长线于
,
,过
作
交
的延长线于点
,交
的延长线于点
,连接
交
于点
,则下列结论:①
;②
;③
;④
.其中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/b62a9d88-a471-4218-8105-9c4998278550.png?resizew=222)
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A.![]() | B.![]() | C.![]() | D.![]() |
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