如图,在
中
,
,点D,E分别是边
,
的中点,延长
到点F,使
,若
,则
的长为( ).
![](https://img.xkw.com/dksih/QBM/2022/9/2/3057862475874304/3069912811610112/STEM/79dc6f3df18b4e7d8d6933f26932a55a.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3018c687427b6257767eda4a8c6612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3677b2682fb3572f6f3ae7b7d8ad1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeedb5f361a1baff6338436fff6c471d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/2022/9/2/3057862475874304/3069912811610112/STEM/79dc6f3df18b4e7d8d6933f26932a55a.png?resizew=161)
A.2 | B.1 | C.![]() | D.![]() |
21-22八年级下·重庆大足·期末 查看更多[2]
更新时间:2022-09-19 17:36:30
|
相似题推荐
单选题
|
适中
(0.65)
【推荐1】三角形三个内角的度数比是1:2:3,它们的最大边的长等于16,则最小边的长为( )
A.4 | B.2 | C.8 | D.6 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,在
中,
,
,
的垂直平分线交
于点E,交
于点F,若
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/17/e3ca88f0-dacc-4567-af59-44b989bd3955.png?resizew=204)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab41054fa9ce51b68e78d9c0cf398d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fffa3d9c32da53b0ea0c338012ea20c.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faffe3765c15f53305516895aa595a9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/17/e3ca88f0-dacc-4567-af59-44b989bd3955.png?resizew=204)
A.2 | B.4 | C.6 | D.8 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】如图,在
中,点D、E、F分别为边
、
、
上的点,
,
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/2023/3/28/3204192963698688/3208490590887936/STEM/f44295d95f7945cdbec0afa049b0fc39.png?resizew=175)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fec7759ff599000728b299802f6b0af1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c765d516a58002ddd8e63ba06cc2c5a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/2023/3/28/3204192963698688/3208490590887936/STEM/f44295d95f7945cdbec0afa049b0fc39.png?resizew=175)
A.12 | B.10 | C.8 | D.6 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,在Rt△ABC中,∠C=90°,∠ABC=30°,AB=8,将△ABC沿CB方向向右平移得到△DEF.若四边形ABED的面积为8,则平移距离是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/18/35fd6529-7059-49ba-810e-56b54049db81.png?resizew=157)
A.1 | B.2 | C.4 | D.8 |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐1】如图,四边形
中,
于点
,
,
,
,点
是
的中点,连接
,则
的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ee826937d2add7a93aaa1422f8b736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca7e1a727ba332984ad857b3d25344d.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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/29/5ea1d5f2-0ce5-45fc-b34c-3c59073a035e.png?resizew=151)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,已知正方形
边长为3,点E在
边上且
,点P,Q分别是边
,
的动点(均不与顶点重合),当四边形
的周长取最小值时,四边形
的面积是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/30/50ac558c-41fc-4f14-89f0-1ed1a16950bb.png?resizew=175)
![](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/adc90c2d45477e166b02359525f40aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3258a144e25987f0b156a25882c580b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3258a144e25987f0b156a25882c580b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/30/50ac558c-41fc-4f14-89f0-1ed1a16950bb.png?resizew=175)
A.![]() | B.5 | C.4 | D.1 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】如图,在
中,
,
,点D为
的中点,点E、F分别在边
上,且
,则下列说法:
①
;
②
;
③
(S代表三角形面积);
④
(C代表三角形周长)
其中正确的个数有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/15/247a3e49-06bd-4b3f-98ee-5b0c18c10c62.png?resizew=129)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08313da7b66283d2e0b3987f3e6761f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ed1fce01430ae31294c29d626626f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b91f064bb73019053992fe781a53356a.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcbc033f671fada239446488f9171026.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ab58325f3216c4ca8937222a00966f.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa7eb63a92aa91325969fda2c960bff.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66b56fdf8b66a1be54c1180cebc35a48.png)
其中正确的个数有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/15/247a3e49-06bd-4b3f-98ee-5b0c18c10c62.png?resizew=129)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐2】如图,在菱形
中,
,M、N分别是边
的中点,
于点P.则
的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/11/e3ef6ddd-39dd-43ac-a3f6-ac417739a175.png?resizew=135)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c3975d0e87ea5028d37444dca76b331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3355e2fa0ac6c675f02ee36c3ced4f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9344be4a53a5a189e4a476c09c633022.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82bf8f29e486ec388107b497520391c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/11/e3ef6ddd-39dd-43ac-a3f6-ac417739a175.png?resizew=135)
A.50° | B.60° | C.70° | D.80° |
您最近一年使用:0次