如图,在△ABC中,以点A为圆心,以适当长为半径画弧,分别交AB、AC于点D、E,再分别以点D、E为圆心,以大于DE的长为半径画弧,两弧交于点F,连接AF并延长,交BC于点G.若
,且AC=9,则AB的长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38bed620b2e7517553fa142193de9d6b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/14/9cb47ef5-bdbf-420a-8ff2-fd54b54af08b.png?resizew=159)
更新时间:2022-10-13 09:41:10
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【推荐2】如图,
的面积为1,第一次操作:分别延长
,
,
至点
,
,
,使
,
,
,顺次连接
,
,
,得到
,第二次操作:分别延长
,
,
至点
,
,
,使
,
,
,顺次连接
,
,
,得到
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【推荐1】如图,在△ABC中,M是BC的中点,AN平分∠BAC,AN⊥BN于N,已知AB=10,AC=14,则MN的长是_______ .
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【推荐2】如图,在直角
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名校
【推荐1】如图,在
中,
,以点A为圆心,
长为半径画弧,交
于点C和点D,再分别以点C,D为圆心,大于
长为半径画弧,两弧相交于点E,作射线
交
于点M,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fde7b0d6619ebd35c987d72e1f6d984c.png)
__________________ .
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填空题
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【推荐2】如图,在
中,
,按以下步骤作图:①以点A为圆心,以适当长为半径作弧,分别交
,
于点M,N;②分别以M,N为圆心,以大于
的长为半径作弧,两弧在
内交于点P;③作射线
,交
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于点E.若
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