如图,在正方形
中,
是对角线
上一点,作
于点
,连接
,若
,
,则
的长为( )
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab00e0cff0876c4183a47f1272cf9928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f21d8e7af78693e5da7957c8034e8bcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/4/f4af41ab-37e8-4e18-8624-48f0bdf1e7f9.png?resizew=137)
A.![]() | B.![]() | C.![]() | D.6 |
更新时间:2024-04-04 21:19:07
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【推荐1】如图,△ABC和△ADE都是等腰直角三角形,∠BAC=∠DAE=90°,AB=AC=4,O为AC中点,若点D在直线BC上运动,连接OE,则在点D运动过程中,则OE的最小值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/cc894fd0-4624-4aee-a928-fcb55d29295e.png?resizew=216)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/cc894fd0-4624-4aee-a928-fcb55d29295e.png?resizew=216)
A.![]() | B.1 | C.![]() | D.2 |
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【推荐2】如图,在 Rt△ABC中,∠ACB=90°,AC=1,BC=
,∠ABC=30°,点O为Rt△ABC内一点,连接AO、BO、CO.且∠AOC=∠COB=∠BOA=120°,则OA+OB+OC的值为( )
(提示:以点B为旋转中心,将△AOB绕点B顺时针方向旋转60°,得到△
)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/8cbf648f-42e7-498e-96f7-bf845a539ecd.png?resizew=175)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(提示:以点B为旋转中心,将△AOB绕点B顺时针方向旋转60°,得到△
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e682ececbec1be828f7f1a9427300ce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/8cbf648f-42e7-498e-96f7-bf845a539ecd.png?resizew=175)
A.2 | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,点F,G分别在正方形ABCD的边BC,CD上,E为AB中点,连结ED,正方形FGQP的边PQ恰好在DE上,记正方形ABCD面积为
,正方形FPQG面积为
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e5d226450493c2710775806fb9e2363.png)
A.10:7 | B.20:7 | C.49:10 | D.49:20 |
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【推荐2】如图,正方形
的边长为6,点
在
上,
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上一动点连接
,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098a96d1e67d5e74d6122c8dfa63f183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0af84415f5279d2dfac875c3f89a8c9.png)
A.![]() | B.![]() | C.![]() | D.5 |
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