小明同学在数学实践活动作出一道图形,探究结论正确的有( )
作图:如图,△BEF是边长为3的等边三角形,延长FE至A,使得AE=EB,连接AB,将
AE绕点A顺时针旋转30°得到线段AD,连接ED,连接DF,过B作BC∥AD,与DF延长线交于点C.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/26/3f063c2f-182f-4664-82d5-19e3693c3baa.png?resizew=191)
探究:①四边形ABCD是平行四边形;②四边形ABCD的面积为
;③连接EC,EC长
;④如果P为DC上一动点,当EP+BP值取最小时,DP=
.
作图:如图,△BEF是边长为3的等边三角形,延长FE至A,使得AE=EB,连接AB,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18483c9c195ecd922772527fa85c0fcb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/26/3f063c2f-182f-4664-82d5-19e3693c3baa.png?resizew=191)
探究:①四边形ABCD是平行四边形;②四边形ABCD的面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/604d037b88148502a5608e0285c76f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49cb6f0d0d4d20445d39d503e8fae2f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
A.①② | B.①②③ | C.①②③④ | D.①②④ |
更新时间:2022-04-10 21:06:24
|
相似题推荐
单选题
|
较难
(0.4)
【推荐1】已知:如图,在等边
中取点
,使得
,
,
的长分别为
,
,
,将线段
以点
为旋转中心顺时针旋转
得到线段
,连接
,下列结论:
①
可以由
绕点
顺时针旋转
得到;
②点
与点
的距离为
;
③
;
④
.
其中正确的结论有( )
![](https://img.xkw.com/dksih/QBM/2022/9/9/3062792711290880/3082725745942528/STEM/2fca6f7bc0eb4b7fbb787e3642fd9a24.png?resizew=119)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9524e3810e06dc781285f1289e75d653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
②点
![](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/5ca7d1107389675d32b56ec097464c14.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b59798989a286cbf711be156b28e6b0c.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9217df2318a3e737868a841dbde543.png)
其中正确的结论有( )
![](https://img.xkw.com/dksih/QBM/2022/9/9/3062792711290880/3082725745942528/STEM/2fca6f7bc0eb4b7fbb787e3642fd9a24.png?resizew=119)
A.①②④ | B.①③④ | C.①②③ | D.②③④ |
您最近一年使用:0次
单选题
|
较难
(0.4)
【推荐2】如图,已知等边
,点D、E分别在边
、
上,
、
交于点F,
,
为
的角平分线,点H在
的延长线上,
,连接
、
,①
;②
;③
;④
;其中说法正确的是( )
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f0533597752a0efee17b335e548a72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36691f0269294ecae8f00b7bce97756c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f14bee33333e85089734deba65811c61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184921a45f87423e92cf1e627ad55143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e0ae50d5993a332b5cddb022eaa6f1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abbb334077cd4f305a29f3f577553186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b91fb87d6d23e13da8c1e701f32fe889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b127e2fb6bf3a04db57b80e556d0f6fa.png)
A.①②④ | B.①③④ | C.②③④ | D.①②③④ |
您最近一年使用:0次
单选题
|
较难
(0.4)
【推荐1】如图,在平面直角坐标系中,点
,点
、
在
轴上,且
,将
绕点
逆时针旋转
后得到
,
是
上一点,且
,连接
、
,若
,反比例函数
的图象恰好经过点
,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9c33700c3358cbbd8db376f9f0613b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce008411654123f28f878b8106f5016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cf39c4552ecb2b659f052dc5c0f5eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e663220a66eff19da6a71e46b397db2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae8817e7cf3fd712f3ae41795af2217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb97aff0960e2640314888a38e7169c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/300d29bf2277a510ab443c1e2a55e1bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f7c077cd4bb00f63a992739286ba616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/ba7a3fa9-babe-4db1-9278-8d2b7d358709.png?resizew=197)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较难
(0.4)
名校
【推荐2】如图,正方形
和正方形
边长分别为4和
,正方形
绕点C旋转,连接
与
交于点O,下列结论正确的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/14/4e5c8fc6-f67f-4433-a045-20268c6d0927.png?resizew=160)
①
;②
;③
;④
;⑤点E落在线段
上时
的长度为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1f13007c6d134c50004c62dc240707.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1f13007c6d134c50004c62dc240707.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8abd6438d49c8524d47b48b3d9bb5fdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/14/4e5c8fc6-f67f-4433-a045-20268c6d0927.png?resizew=160)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1596f7c0d0bab4e7e586d705d323e0d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7d573e81044852a4f024713f125deb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee4a4f3129cc03a96ba73ffcce36d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96a1c6290dd85059d1fb10b1fb7287aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9414c637bd18f9a6f6922e65d14dd31.png)
A.2个 | B.3个 | C.4个 | D.5个 |
您最近一年使用:0次
单选题
|
较难
(0.4)
【推荐1】如图,在
中,
,以
的各边为边分别作正方形
,正方形
与正方形
,
与
相交于点
,连结
并延长交
于点
,且
.记
的面积为
,
的面积为
,若
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/2021/1/5/2636567639023616/2669990538682368/STEM/613244db-50a8-4955-8de2-cc844ee1339c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b9d54cbbf601f4583659771eb534997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b60c3b75ff1610956dfe9a9cd7692d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02b1139e07e431b5d4276757b232bad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360496a4f5cc8a5faca5e089ae4f9531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2057ede276b7f9b509f9db721d8e52a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/258b217fa39b7f821100a8348654b5e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b07be2801018df85a50bcbe13d285ad1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2021/1/5/2636567639023616/2669990538682368/STEM/613244db-50a8-4955-8de2-cc844ee1339c.png)
A.6 | B.![]() | C.8 | D.9 |
您最近一年使用:0次
单选题
|
较难
(0.4)
【推荐2】如图,在
中,
,
,
的内切圆
与边
相切于点
,过点
作
交
于点
,过点
作
的切线交
于点
,则
的值等于( )
![](https://img.xkw.com/dksih/QBM/2018/11/9/2072060152111104/2074884509024256/STEM/e4ff9ed56d3148ca80a238c942d1a8ac.png?resizew=148)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5ebb1a87e08aed3521817cf5ffd1196.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ee1c7da32719907ff85adee67a3753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2027dcd14ca4e728764d8591f7808920.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/656f40ca9f672daff14b444408380cb9.png)
![](https://img.xkw.com/dksih/QBM/2018/11/9/2072060152111104/2074884509024256/STEM/e4ff9ed56d3148ca80a238c942d1a8ac.png?resizew=148)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较难
(0.4)
【推荐1】如图,
是
的外接圆,
,点
是
外一点,
,
,则线段
的最大值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/29/8879cf20-716b-41bd-8f20-c2c43aee367b.png?resizew=158)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e2b5060e1311f27bcbde24dac84db8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc2678691226b1d08e6d84242692a43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/29/8879cf20-716b-41bd-8f20-c2c43aee367b.png?resizew=158)
A.9 | B.4.5 | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较难
(0.4)
真题
名校
【推荐2】如图,菱形
的顶点分别在反比例函数
和
的图象上,若
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54cec401b13d837b0cc8040d15a7a37f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb79a1b0c6dc78e6de17de6bed477fb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ec435aa1401dbce7863b531bf2f3e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67351fe10fcfc3f9072eec4c60bfaaa5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次