在平行四边形
中,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f98dbaf471658103f6fdbdb90b42cdca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2a8bf5e05a07c93a7104839fc21849.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-05-19 08:51:44
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【推荐1】下列说法中正确的个数有( )
①过一点有且只有一条直线与已知直线垂直;
②同旁内角互补;
③不相等的两个角一定不是对顶角;
④垂线段最短;
⑤三角形的三条高线交于一点,这点称为三角形的重心.
①过一点有且只有一条直线与已知直线垂直;
②同旁内角互补;
③不相等的两个角一定不是对顶角;
④垂线段最短;
⑤三角形的三条高线交于一点,这点称为三角形的重心.
A.4个 | B.3个 | C.2个 | D.1个 |
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【推荐2】如图,直线
,
于点A,若
,则
的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/30/8dcce830-18cf-4f2c-8288-93b424327300.png?resizew=228)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bc8444d63d1ca92651c62fe9b220859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822ba132ca9dd0d4a050659aef3c9b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de29863745ee5013f270961735a31837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d57899ad4774aed9ccc7bd23db72153.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/30/8dcce830-18cf-4f2c-8288-93b424327300.png?resizew=228)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,在平行四边形
中.
为CD上一点.
.连接AE,BD交于点
,则
等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/5a29cee3-21f5-4120-b7af-11f976e5c8de.png?resizew=186)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d6d3182d8385aedacf0b5ef52457f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655b6a742dbacdab5aaa298007663dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1733f417d1ef78f7a58b7f0a049ec4bb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/5a29cee3-21f5-4120-b7af-11f976e5c8de.png?resizew=186)
A.2:5 | B.2:25 | C.4:5 | D.4:25 |
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【推荐2】如图,在
中,点
是对角线
,
的交点,点
是边
的中点,且
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/2019/7/9/2243022133944320/2243167445565440/STEM/c9f1b9c3ea8e4cfe9b2feb3e1c6796cc.png?resizew=212)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ebb33adb2310a6e03918761e68204a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://img.xkw.com/dksih/QBM/2019/7/9/2243022133944320/2243167445565440/STEM/c9f1b9c3ea8e4cfe9b2feb3e1c6796cc.png?resizew=212)
A.![]() | B.![]() | C.![]() | D.![]() |
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