如图,
是
的中位线,点
在
上,
,连接
并延长,与
的延长线相交于点
.若
,则线段
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/12/348caaac-2075-4de2-8cd5-698c69b40e02.png?resizew=150)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4cdaf54255866a6665166d174ae6b05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/12/348caaac-2075-4de2-8cd5-698c69b40e02.png?resizew=150)
A.7 | B.8 | C.9 | D.10 |
更新时间:2024-01-09 10:47:57
|
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单选题
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名校
【推荐1】如图,
是边长为2的等边三角形,取
边的中点E,作
,
,得到四边形
,它的面积记作
;取
边的中点
,作
,
,得到四边形
,它的面积记作
,…,照此规律作不去,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a24ee04b7e461c045431ce83d15a91de.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/522230546d4b802094e86ceb48c2ba38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce220ebdafba01c154b92aecb7971687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6341f44cd658dad7b37c4612204dd8ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24248c60ffd67a44f2fd7c9236d6106e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b50ec7342673cc1f11b613c3efd3c6c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
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(0.85)
【推荐2】如图,在矩形
中,
、
、
、
分别是
、
、
、
的中点,
,则四边形
的周长为( )
![](https://img.xkw.com/dksih/QBM/2021/9/1/2798768621338624/2804672344489984/STEM/9011d76a-c618-48c4-801f-cf56df3ce529.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454328a8e75953fdb0835ce80d9566e3.png)
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A.24 | B.18 | C.12 | D.6 |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐1】如图,已知
=
=
=
,且△ABC的周长为15cm,则△ADE的周长为( )
![](https://img.xkw.com/dksih/QBM/2019/1/14/2118686021181440/2119385552134144/STEM/3d11acc13e734ff5bb551d837339471f.png?resizew=138)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccf4a2eec0d77573fdedc64225fe0993.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/103070abee09399f1e9510a75c3ba9e8.png)
![](https://img.xkw.com/dksih/QBM/2019/1/14/2118686021181440/2119385552134144/STEM/3d11acc13e734ff5bb551d837339471f.png?resizew=138)
A.6cm ![]() | B.9cm ![]() | C.10cm ![]() | D.12cm |
您最近一年使用:0次
单选题
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【推荐2】如图,在矩形
中,
,
的延长线与
的延长线相交于点E,且与
相交于点O,若
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/17/8013214d-f0d8-4b7d-9862-6c2391900042.png?resizew=104)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/558098da135bc12e7fdca05d14c3848e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
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A.![]() | B.3 | C.![]() | D.![]() |
您最近一年使用:0次