如图,在△ABC中,∠C=90°,∠B=15°,AC=2,分别以点A 、B为圆心,大于
AB的长为半径画弧,两弧相交于点M、N,作直线MN交BC于点D,连接AD,则AD的长为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/8/3e47edc7-ce69-4a69-a5a8-ee3f8f6aebf9.png?resizew=189)
更新时间:2022-06-22 18:31:10
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【推荐2】已知△ABC中,BC=26cm,AB、AC的垂直平分线分别交BC于E、F,则△EAF周长_______ .若∠BAC=110°,则∠FAE的度数为________ °
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/15/56eb706b-0318-4f5d-93ed-9c82f1471e40.png?resizew=120)
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【推荐1】如图,已知
,AD是角平分线且
,分别以点A和点D为圆心,大于
的长为半径作弧,两弧相交于M,N两点,作直线MN,交AC于点F,作DE⊥AC,则△DEF周长为______ .
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【推荐2】如图,
中,
,
,分别以A,B为圆心,
为半径画弧交于两点,过这两点的直线交
于点D,连接
,则
的周长为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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