如图,已知菱形
和菱形
,
,
,
,连接
,
.将菱形
绕点
旋转,当
最大时,
等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/27/eea9cc0e-47bf-4cee-a589-ab7404d91fb8.png?resizew=348)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfe6223cfccb0c92532a65a9c1efd94b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bae2736ade41af30db54753220a71eaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cfc2771aa0d5b97d2297f8a26a6f6b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edbf2c269423f930e499615444f02e16.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/27/eea9cc0e-47bf-4cee-a589-ab7404d91fb8.png?resizew=348)
A.2 | B.![]() | C.1 | D.![]() |
更新时间:2022-04-15 16:21:55
|
相似题推荐
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【推荐1】如图,在菱形ABCD中,点E,F、G,H分别是边,AB,BC,CD和DA的中点,连接EF,FG,GH和HE.若EH=3EF,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/74c825ef-6b7b-4f2f-8658-10cfa184fd98.png?resizew=164)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/74c825ef-6b7b-4f2f-8658-10cfa184fd98.png?resizew=164)
A.AB=![]() | B.AB=2![]() | C.AB=3EF | D.AB=![]() |
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【推荐2】已知,如图,菱形
的四个顶点均在坐标轴上,点
,
,
.点P是菱形
边上的一个动点,连接
,把
绕着点E顺时针旋转
得到
,连接
.若点P从点C出发,以每秒5个单位长度沿
方向运动,则第2025秒时,点F的坐标是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/df9cbe05-a136-4639-b498-9fcd0881a77a.png?resizew=171)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9c33700c3358cbbd8db376f9f0613b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/076271898437c71f15453bc809eaccdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/563cef72a9b85826796dbcff536c525a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3137705cb4170baafa66ff46eefb7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3137705cb4170baafa66ff46eefb7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a0387fc1258f31e44a10068c0ccfd0.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63386a9363e81875d7df695d5bff04fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/df9cbe05-a136-4639-b498-9fcd0881a77a.png?resizew=171)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,在
中,
,
,
,将它绕着
中点
顺时针旋转一定角度
小于
后得到
,恰好使
,
与
交于点
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/2fc843f2-b923-4084-8a25-c902a624511b.png?resizew=186)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29d9dee87cbf16f98a9dc41765161755.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0409d63b69ab4ff5897a537d8e651ed1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/2fc843f2-b923-4084-8a25-c902a624511b.png?resizew=186)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,
中,
,
,
,
绕点C顺时针旋转得
,当
落在
边上时,连接
,取
的中点D,连接
,则
的长度是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb01d2b57580731c8b807ac8cffc8ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c14a66ed4bd66df65bc42c4ac1ed15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2f73e4d0557ca664d1edd70b7275667.png)
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【推荐1】如图,矩形
中,
,以O 为圆心,
为半径作弧,且
,则阴影部分的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6976d08c715cd76bd774accc6ea1219.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c3b184adb06f96bacedc27c6b21b6c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,
的对角线
,
相交于点O,
是等边三角形,
.则
的长是( )
![](https://img.xkw.com/dksih/QBM/2023/5/31/3249594787733504/3251823242215424/STEM/b73032035fff4fe3a4cfda16d1b1c94b.png?resizew=167)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2023/5/31/3249594787733504/3251823242215424/STEM/b73032035fff4fe3a4cfda16d1b1c94b.png?resizew=167)
A.![]() | B.4 | C.6 | D.![]() |
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