如图,点A,B,C分别在
上,连接
,若
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aebd424b8163d98cc811711585672cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b51a04e389a6db1580cf7d1068363236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721e29b775e696045f44a4b1e7f74ef2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-05-08 14:37:05
|
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【推荐1】如图1,在矩形
中,
,点E为
边的中点,点P为
边上一个动点,连接
.设
的长为x,
,其中y关于x的数图象如图2,则矩形
的面积为( )
![](https://img.xkw.com/dksih/QBM/2022/4/30/2969462961455104/2974178954952704/STEM/14ccd143-c385-43f4-8e1b-49a2d049aca7.png?resizew=276)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18fd40e8ec715e79f345a0ea2ebc3a17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2bcd4cf238b55ab720189ccd6a8cd9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2022/4/30/2969462961455104/2974178954952704/STEM/14ccd143-c385-43f4-8e1b-49a2d049aca7.png?resizew=276)
A.15 | B.24 | C.35 | D.36 |
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【推荐2】如图,矩形
中,对角线
,
交于点
.若
,
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/551137582e6b5534016fe384b492b13e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/1/8e9c6726-8575-426e-8d9f-301d76e4bf53.png?resizew=220)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
【推荐1】已知,A,B,C是⊙O上的三点,∠BOC=100°,则∠BAC的度数为( )
![](https://img.xkw.com/dksih/QBM/2019/12/1/2345576561557504/2345984839319552/STEM/f9ac52c652ff46eb836fe85da0eb8ff3.png?resizew=103)
![](https://img.xkw.com/dksih/QBM/2019/12/1/2345576561557504/2345984839319552/STEM/f9ac52c652ff46eb836fe85da0eb8ff3.png?resizew=103)
A.30° | B.45° | C.50° | D.60° |
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【推荐2】如图,⊙O为△ABC的外接圆,AB为直径,AC=BC,则∠A的度数为( )
![](https://img.xkw.com/dksih/QBM/2019/3/27/2169705656852480/2172491211603969/STEM/f8fcb5e78e16450cb9ef21d39c085c23.png?resizew=114)
![](https://img.xkw.com/dksih/QBM/2019/3/27/2169705656852480/2172491211603969/STEM/f8fcb5e78e16450cb9ef21d39c085c23.png?resizew=114)
A.30° | B.40° | C.45° | D.60° |
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【推荐1】一个边长为4cm的等边三角形ABC与⊙O等高,如图放置,⊙O与BC相切于点C,⊙O与AC相交于点E,则AE的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/26/a5d91cb2-ffd4-4db8-8e13-29a0b2188cb5.png?resizew=167)
A.1 | B.2﹣![]() | C.![]() | D.![]() |
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【推荐2】如图,AB是⊙O的直径,弦CD⊥AB于E,若OA=2,∠B=60°,则CD的长为( )
![](https://img.xkw.com/dksih/QBM/2021/12/30/2883659208130560/2884268276187136/STEM/1e0722d9-be98-480c-88b6-f146f8b75c4c.png?resizew=123)
![](https://img.xkw.com/dksih/QBM/2021/12/30/2883659208130560/2884268276187136/STEM/1e0722d9-be98-480c-88b6-f146f8b75c4c.png?resizew=123)
A.![]() | B.2![]() | C.2![]() | D.4 |
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