如图,点
是正方形
边
上一点,过
作
交
的延长线于
点,连接
.
(1)
可以由
通过旋转变换得到,则旋转中心是__________,旋转方向是__________,旋转角是__________度.
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ed934aa29859e93b1f758229a12581.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/26/487d1c87-8c88-4906-af38-2361f2c59330.png?resizew=158)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004104bafb5f30338123d4ea2b7fedde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82773737609e65dea3c5c67099f1b10d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
23-24九年级上·全国·课后作业 查看更多[3]
23.1 图形的旋转(已下线)第02讲 图形的旋转(9类题型)-【帮课堂】2023-2024学年九年级数学上册同步学与练(浙教版)(已下线)专题23.1 图形的旋转(知识梳理与考点分类讲解)-2023-2024学年九年级数学上册基础知识专项突破讲与练(人教版)
更新时间:2023-09-18 20:27:26
|
相似题推荐
解答题-问答题
|
较易
(0.85)
【推荐1】如图,大坝横截面的迎水坡
的坡比
为
,背水坡
的坡比
为
,大坝高
,坝顶宽
,求大坝横截面的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/179299c470bf5c52c2b9ab9b6b9d3c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff51cfdf99a6f1000b0878a6588f5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7154a0a97ffe6352d912ce80dd89c9bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d65e051e943ab28fa57aee2fb57994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c84588c4bdd4195c8f34b43fad46a55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8542a0af4ea891ce6a622afb8193dc00.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/6/8de6d297-59d6-4fc5-91a2-7d9cca3be509.png?resizew=210)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】某校八年级一班在校园操场一角开辟了一块四边形的小花园,学生们在课堂上学习理论之余,还可以到小花园实际操练,对生物的发展规律有了更为直观的认识.如图,四边形
是规划好的小花园,经过测量得知:
,
,
,
,
,求四边形ABCD的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1edf37c104d215fed83a125f88b651d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e604056e427f82f7a282e8ad3d14e636.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f89b5ea897858291f3d8c519b202a6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efd9d1f8e0dfb23505cc81e214c48551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/27/b7d02688-1c29-4a0e-8dd7-fb7993f8c29a.png?resizew=208)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
【推荐1】如图,正方形
,点
分别在
,
上,且
,
与
相交于点
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1db2c0955e5a5be47faf855bca738a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97075fe3c2a105f5d2d0a27a9f2b3410.png)
![](https://img.xkw.com/dksih/QBM/2020/7/7/2500950798696448/2501519957590016/STEM/eac56b51f7484b1ebc87244e8e2a7a95.png?resizew=141)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】四边形
是正方形,
旋转一定角度后得到
,如图所示,如果
,
,
指出旋转中心和旋转角度
求
的长度
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f62295c36d2e2174908c2bec0eb5b30f.png)
与
的位置关系如何?试说明理由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa3254460ecbacecb3e57c5dce227f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0fc232acd89fc499de346969ce8ced1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e0c5cb53fd85b7a23f0580df6bb49a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f62295c36d2e2174908c2bec0eb5b30f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://img.xkw.com/dksih/QBM/2021/11/4/2843903869091840/2844968424587264/STEM/eec1ba77-b746-497c-9e05-0090593f2f0d.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐1】如图,在正方形网格中,
和
的顶点均在格点上,并且
是由
旋转得到的.根据所给信息,填空:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/29/1bd9684a-c4f5-4ac5-af3b-f0119a4a6b5c.png?resizew=182)
(1)旋转中心为点____________、旋转角的度数为____________
、旋转方向为____________;
(2)连结
,则四边形
的形状是____________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b185184dc2dc3894a0313fd13f26a59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b185184dc2dc3894a0313fd13f26a59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/29/1bd9684a-c4f5-4ac5-af3b-f0119a4a6b5c.png?resizew=182)
(1)旋转中心为点____________、旋转角的度数为____________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b6c3736b00d6af73d2d12c5da5fae04.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】四边形
是正方形,
绕旋转中心顺时针旋转一定角度后得到
,点E落在AD上,如图所示,如果
,
,求:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/4a910be5-3c7b-40aa-a9ca-ba47544bffb9.png?resizew=191)
(1)旋转中心是_______,旋转角度是_______
;
(2)求
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441dec590b47adc3678a291a3ec89a4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed920dfefe8829694c03de363b9de9fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc39144b305c67d44410d41053a1d28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/4a910be5-3c7b-40aa-a9ca-ba47544bffb9.png?resizew=191)
(1)旋转中心是_______,旋转角度是_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2ffe216a34f1d35cc9bc608a0b56b6.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
您最近一年使用:0次