如图,C在以
为直径半圆上,
,
,点D是弧
上的一动点,
,连接
,则
的长的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e240a6378adf6d23ebf9cc710c9bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aabecf66d94e4094f9cc46fd8ee050f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497846628a41a9bc750a645e045afb47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/21/613a0102-662c-4587-8a86-9a141f32fd65.png?resizew=145)
A.![]() | B.1 | C.![]() | D.![]() |
2023·山东临沂·二模 查看更多[1]
更新时间:2023-06-21 18:12:45
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【推荐1】如图,在
中,
,
,
绕点B顺时针旋转
得到
,当
的最小值为
时,n的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/26/d0d455f7-8a3b-4209-bf2a-ac6fda60eb68.png?resizew=177)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fffa3d9c32da53b0ea0c338012ea20c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/178bd592e9393be12d87a4fe2066e0d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/26/d0d455f7-8a3b-4209-bf2a-ac6fda60eb68.png?resizew=177)
A.3 | B.![]() | C.![]() | D.4 |
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【推荐2】如图,在菱形
中,
,
,点
从点
出发,以
的速度沿
方向匀速运动至点
停止;同时,点
从点
出发,以
的速度沿
方向匀速运动至点
停止,连接
,
.设运动时间为
,
的面积为
,则
关于
的函数图象大致为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eee296a7d9fba487f1485c61580196f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e3fe490874dafd25f0def122e3d0700.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d17bdf4116cd7ea51fd6a12c32e9867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc5bbe472627efc5fc95c2fa34199ccf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad42a06900bd08d0c997d6adb09d36f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/963e18a44d9e95c1ba2f1188115876d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418cb34a5390475fa6d36394282d2142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/129f1d6567bef09b00b7f37894e6dba7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eacd892f03da01942140679667792250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图(1),在平面直角坐标系中,矩形
在第一象限,且
轴,直线
沿
轴正方向平移,在平移过程中,直线被矩形
截得的线段长为
,直线在
轴上平移的距离为
,
、
间的函数关系图象如图(2)所示,那么矩形
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ccb7a14074460f0fd65dc22b5a767f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa6342e0a5a8942cfb1cf535ceb2c50d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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A.![]() | B.![]() | C.8 | D.10 |
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【推荐2】如图所示,正方形ABCD中,对角线AC、BD相交于点O,AE平分∠BAC ,分别交BC、BD于E、F,下列结论:①△ABF∽△ACE;②BD=AD+BE;③
;④若△ABF的面积为1,则正方形ABCD的面积为
.其中正确的结论的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/11/29c805e4-9f43-4757-89cd-3f4d76c09b2a.png?resizew=146)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f8abb0dd0a0e1fa20e8e433f0c5ea0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3755d7e08b98c26303f2f61de7e7ddd2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/11/29c805e4-9f43-4757-89cd-3f4d76c09b2a.png?resizew=146)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
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【推荐1】如图,在平面直角坐标系中,四边形
关于
轴对称,
,
,
,将四边形
绕点
逆时针旋转90°后得到四边形
,依此方式,绕点
连续旋转2021次得到四边形
,那么点
的坐标是( )
![](https://img.xkw.com/dksih/QBM/2020/11/17/2594896886308864/2608192490971136/STEM/8ddabf88-fe79-476b-b6ed-232dc53e7ba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79684a6e92297749c005e2b23cac9710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9774f83067ed956a551bc41adcce0469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59f35d4ede5b91b03d09a99262de2693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd7491996a2b877163faaf5ee624a2ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23dc6121c227e254b82cb1ed3bc79f8a.png)
![](https://img.xkw.com/dksih/QBM/2020/11/17/2594896886308864/2608192490971136/STEM/8ddabf88-fe79-476b-b6ed-232dc53e7ba3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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真题
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【推荐2】如图,四边形
为正方形,将
绕点
逆时针旋转
至
,点
,
,
在同一直线上,
与
交于点
,延长
与
的延长线交于点
,
,
.以下结论:
①
;②
;③
;④
.其中正确结论的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f850c705372b8a85489505da53239fd.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a16f5621716bfef7a056a3f2712feb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a16f5621716bfef7a056a3f2712feb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbe66e3687721a9484882f45a91dc05c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4297c0901be268faf59fb5622f19f310.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5fdb29cdd09ab03130ec1f3462ac014.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f097b496cdaf8c2205e89656783750e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004f5c07d1761e33aad777566c94f55c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/226a5aa75982eeca49ef703dc5d3c9c5.png)
A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐1】已知⊙O的半径为2,A为圆内一定点,AO=1.P为圆上一动点,以AP为边作等腰△APG,AP=PG,∠APG=120°,OG的最大值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/19fa2079-98ae-4f41-b22b-46b2df63bf9f.png?resizew=209)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/19fa2079-98ae-4f41-b22b-46b2df63bf9f.png?resizew=209)
A.1+![]() | B.1+2![]() | C.2+![]() | D.2![]() |
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【推荐2】如图,四边形ABCD内接于半圆O,AB为直径,AB=4,AD=DC=1,则BC的长为( )
![](https://img.xkw.com/dksih/QBM/2017/12/4/1831338211819520/1834947891585024/STEM/01df67da2fa44f1591011060f6f90e5e.png?resizew=125)
![](https://img.xkw.com/dksih/QBM/2017/12/4/1831338211819520/1834947891585024/STEM/01df67da2fa44f1591011060f6f90e5e.png?resizew=125)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次