如图,在等边
中,
,
分别在
,
上,
,
与
相交于点
,
于点
,连接
并延长,与
交于点
.若
是
的中点,
,则
的长度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eac6f98ed81727dc5f6699ea5117fff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b62ce0cbffa4758c7a0e6fb7ca4d24e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7413c0b4ad8aa729370c5780395ac1e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/19/ad2d40cd-5858-4550-b176-8fa5a3ef81a1.png?resizew=213)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-10-20 23:54:13
|
相似题推荐
单选题
|
适中
(0.65)
【推荐1】下列命题的逆命题是真命题的是( )
A.对顶角相等 | B.全等三角形的对应边都相等 |
C.全等三角形的周长相等 | D.全等三角形的对应角都相等 |
您最近一年使用:0次
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【推荐2】如图,已知在正方形
中,
厘米,
,点
在边
上,且
厘米,如果点P在线段BC上以2厘米/秒的速度由B点向C点运动,同时,点
在线段
上由
点向
点运动,设运动时间为t秒,当ΔBPE与ΔCQP全等时,
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e388f70a5ff262cc18e6a5d00817b6dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b46403bbccd65e4d375669e3229eeb2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070bc896d35495237fd65576e9b6f88e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
A.2 | B.2或1.5 | C.2.5 | D.2.5或2 |
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【推荐1】已知锐角
,如图.
(1)在射线OM上取一点A,以点O为圆心,OA长为半径作弧DE,交射线ON于点B,连接AB;
(2)以点B为圆心,AB长为半径作弧,交弧DE于点C;
(3)连接BC,AC.作射线OC.
根据以上作图过程及所作图形,下列结论中错误的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/33a6ac45-5a94-4944-8c1b-1eaa4be24bc8.png?resizew=163)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
(1)在射线OM上取一点A,以点O为圆心,OA长为半径作弧DE,交射线ON于点B,连接AB;
(2)以点B为圆心,AB长为半径作弧,交弧DE于点C;
(3)连接BC,AC.作射线OC.
根据以上作图过程及所作图形,下列结论中错误的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/33a6ac45-5a94-4944-8c1b-1eaa4be24bc8.png?resizew=163)
A.![]() | B.若![]() ![]() |
C.OB垂直平分AC | D.![]() |
您最近一年使用:0次
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【推荐2】如图,对折矩形纸片
,使
与
重合,得到折痕
,然后把
再对折到
,使点
落在
上的点
处,若
,则
的长度为( )
![](https://img.xkw.com/dksih/QBM/2020/6/11/2482135861010432/2485108314300416/STEM/31837d13f24d48aa8f5f6fe9032388f6.png?resizew=153)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/704b0d8240509242d1ffd9b50d93e68f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c8d70a1fa4f53f2dde8d09b8e9fdff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39addc1173a458af87ed5c5e3f06466.png)
![](https://img.xkw.com/dksih/QBM/2020/6/11/2482135861010432/2485108314300416/STEM/31837d13f24d48aa8f5f6fe9032388f6.png?resizew=153)
A.1 | B.![]() | C.![]() | D.2.5 |
您最近一年使用:0次
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【推荐1】菱形ABCD的边长为4,∠A=60°,点G为AB的中点,以BG为边作菱形BEFG,其中点E在CB的延长线上,点P为FD的中点,则PB=( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/17/138281e8-9f7c-4820-bfb4-5f7b904f89bc.png?resizew=229)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/17/138281e8-9f7c-4820-bfb4-5f7b904f89bc.png?resizew=229)
A.![]() | B.2![]() | C.![]() | D.![]() |
您最近一年使用:0次
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【推荐2】如图,在
中,
,
为中线,若
,
,设
与
的内切圆半径分别为
,
,那么
的值为( )
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8e9ec412ea0355e4e5cd06c60e5fee.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次