如图是由一些边长为1的等边三角形组成的网格,其中A、B、D、E均是等边三角形的顶点,延长
交
于点C,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/2cde1b4d-37ce-46f9-848b-1b27d5b0971d.png?resizew=170)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d199a709d356f6e19e542b919bb85819.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/2cde1b4d-37ce-46f9-848b-1b27d5b0971d.png?resizew=170)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2021-05-15 18:10:59
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【知识点】 相似三角形的判定与性质综合
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【推荐1】如图,在
中,点
在
边上,
的延长线交于点
,下列结论错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54efc4116b6cb296d55892a21e0d797f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061de0d177f9a843c2047ff51b02b747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/2/4ed83a76-2aac-4b48-9f79-182516135e5d.png?resizew=146)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,在菱形ABCD中,
于点E,交BD于点F,
交BD于点G,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f5dc11efe60b4fd9a13b1d6b83842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6fe93d113c0d627bd38c389bb7ad16e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da3814e5abe085d954e634f8d923b35c.png)
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A.![]() | B.![]() | C.![]() | D.3 |
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