名校
1 . 如图,
中,
,分别以
为边作正方形
,
交
于点O.若
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/11/0060010c-1252-4cbb-a1ae-804dd1a8fc61.png?resizew=182)
![](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/e5dc62e10004e73908091338362917da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beadf47588555ebfa1a5c4b952c1711f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c543f560d8a91d5d60c96feebff9ae50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/11/0060010c-1252-4cbb-a1ae-804dd1a8fc61.png?resizew=182)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-03-06更新
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8卷引用:【新东方】【2021.6.16】【omo】【初三下】【数学00127】
(已下线)【新东方】【2021.6.16】【omo】【初三下】【数学00127】2021年浙江省苍南县初中毕业升学适应性考试数学试题陕西省咸阳市秦都区2021-2022学年九年级上学期期末数学试题辽宁省阜新市海州区实验中学2022-2023学年九年级上学期期末数学试题陕西省汉中市汉台区2022-2023学年九年级上学期期末数学试题安徽省六安市金寨县2023-2024学年九年级上学期期末数学试题(已下线)2023年安徽省中考数学真题变式题6-10题辽宁省沈阳市皇姑区虹桥初级中学2023-2024学年九年级上学期质量检测数学试题
名校
2 . 如图,点D、E分别在
上,
,
,
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9183ec7a1b04e16995eabcf7e8f60187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/936c74c9a7edc81c037f4ea795d130bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f61558037aae0b9ffaa58b9742ee70bd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-02-23更新
|
298次组卷
|
8卷引用:陕西省商洛市丹凤县2021-2022学年九年级上学期期末考试数学试题
名校
3 . 如图,
、
分别是
的边
、
上的点,
,若
,则
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/19/d3bc30f4-b802-4220-8123-5696f1647987.png?resizew=210)
![](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/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/105068b25f5a63af32f4082cfe08691e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c7376904b1c1fdfa781b8f066667b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e2850b45c97e088b2f90410cdd8fe8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/19/d3bc30f4-b802-4220-8123-5696f1647987.png?resizew=210)
A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
名校
4 . 如图,在正方形
中,点E是边
上一动点,过点A作
于G,交
于点F,,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/20/a0e3950e-e937-464e-b8e1-418fe9ea982b.png?resizew=118)
(1)求证:
;
(2)当点E运动到什么位置时,
是以
为底的等腰三角形?
(3)在(2)的条件下,若
的面积为1,求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187ed13a7bd532bd39af5e5ad7493a2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/20/a0e3950e-e937-464e-b8e1-418fe9ea982b.png?resizew=118)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e956cbcbb193c832fd949fd70937e95.png)
(2)当点E运动到什么位置时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/175d37bee4bc7be9fa3a5c05665955a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddbf5459b20ca890a47ebf8d51d90cc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49cd8576a1aaed7e787af3f5b19822a0.png)
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名校
5 . 如下图,在平行四边形
中,
是边
的中点,
,
,
交于点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b9705644b656fc2a57e5b979965383c.png)
_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/c91148e0f2fb45e1bed2f38f3deb41c4.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b9705644b656fc2a57e5b979965383c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/21/43329701-6028-4741-bc03-73c617ff2017.png?resizew=210)
您最近一年使用:0次
名校
6 . 如图,点G、F分别是
的边
、
上的点,
的延长线与
的延长线相交于点A,
交
于点E,则下列结论错误的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/67935a98-8e1f-46e1-8896-22ea23ff2df9.png?resizew=121)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e57a13c665af88f326c9890072bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436f108fd4921dae15ecff19270237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d9b798a71ae94839e1ebb0a644202e8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/67935a98-8e1f-46e1-8896-22ea23ff2df9.png?resizew=121)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-02-09更新
|
81次组卷
|
25卷引用:山东省泰安市岱岳区2020-2021学年八年级下学期期末数学试题
山东省泰安市岱岳区2020-2021学年八年级下学期期末数学试题【区级联考】黑龙江省哈尔滨市松北区2019届九年级上学期期末调研测试数学试题【区级联考】黑龙江省哈尔滨市松北区2018-2019学年人教版五四学制九年级(上)期末数学试题2021年黑龙江省哈尔滨市松北区初中升学调研测试(二模) 数学试卷(已下线)沪科版2021-2022学年九年级数学上册第22章 相似形专题07 相似三角形的判断和性质(专题强化-提高)广西壮族自治区崇左市宁明县2021-2022学年九年级上学期期中数学试题湖南省娄底市娄星区2021-2022学年九年级上学期期末数学试题2017届黑龙江尔滨四十七中九年级开学考试数学试卷安徽省合肥市寿春中学2017-2018学年九年级上学期第二次阶段考试数学试卷北师大版九年级上册数学全册综合测试题一2017-2018学年浙江省金华市义乌市稠州中学九年级(上)第一次月考数学试卷山东省青岛39中2019届九年级第一学期北师大版数学上第四章图形的相似周末自主测评试卷北师大版九年级数学上册第四章图形的相似第2节《平行线分线段成比例》课时练习黑龙江省哈尔滨市156中学2019-2020学年九年级上学期期中数学试题黑龙江省哈尔滨市第一五六中学2019-2020学年九年级上学期期中数学试题黑龙江省哈尔滨工大附中2019-2020学年九年级上学期9月月考数学试题黑龙江省哈尔滨市49中2019-2020学年九年级下学期开学阶段线上测试(数学)试题(已下线)专题27.26 《相似》全章复习与巩固(巩固篇)(专项练习)-2021-2022学年九年级数学下册基础知识专项讲练(人教版)(已下线)专题27.35 相似三角形几何模型-AX型图(专项练习)-2021-2022学年九年级数学下册基础知识专项讲练(人教版)2022年黑龙江省哈尔滨市南岗区中考数学模拟练习试题(已下线)专题4.9 平行线分线段成比例(巩固篇)(专项练习)-2022-2023学年九年级数学上册基础知识专项讲练(北师大版)(已下线)专题27.10 由平行线截得的比例线段(巩固篇)(专项练习)-2022-2023学年九年级数学下册基础知识专项讲练(人教版)黑龙江省哈尔滨市南岗区松雷中学2021-2022学年九年级下学期模拟测试(二)数学(五四制)试卷(已下线)专题6.9 由平行判断成比例的线段(巩固篇)(专项练习)-2022-2023学年九年级数学下册基础知识专项讲练(苏科版)辽宁省沈阳市苏家屯区五校2023-2024学年九年级上学期期中数学试题
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7 . 四边形
为正方形,边长为6,点M为对角线
上一动点(不与点B,D重合),连接
,过点M作
,交射线
于点N.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/9bfdad50-667c-4c6b-835a-2846b78aa822.png?resizew=436)
(1)如图1,求证:
;
(2)如图2,作射线
交射线
于点P.
①当点N在边
上时,设
的长为
,
的面积为
,求
关于
的函数解析式:
②当
时,请直接写出
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90b62aa75a1b3b42af8bb133e043bf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/9bfdad50-667c-4c6b-835a-2846b78aa822.png?resizew=436)
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5283a358b114bccad4eec7b79848c3d3.png)
(2)如图2,作射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
①当点N在边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba4e0b69a99a550d90722d4919cb13e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b7b0d1f022143cd6e5fd56b7497a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438f34bc8b04e8c494b91306ac6fe352.png)
您最近一年使用:0次
2023-01-30更新
|
190次组卷
|
3卷引用:辽宁省营口市大石桥市2020-2021学年九年级上学期期末数学试题
8 . 如图,在
中,
,以
为直径的
分别交
,
于点D,E,
于点G,交
的延长线于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/1f1470cb-69d6-4e61-8c63-0865e46e663a.png?resizew=198)
(1)求证:直线
是
的切线;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d222d3bcc808dd5b62b2a9ccb543a6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/1f1470cb-69d6-4e61-8c63-0865e46e663a.png?resizew=198)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/addb8e20db1fbb40f17dea52f951b907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6286a9e223af70e286edc42e901a45e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
您最近一年使用:0次
9 . 如图,在
中,
,
,D是
上的一个动点(不与点A,B重合),连接
,将
绕点C顺时针方向旋转
得到
,连接
,
与
相交于点F,连接
.下列结论:①
;②若
,则
;③
;④若
,
,则
.其中正确结论的是( )
![](https://img.xkw.com/dksih/QBM/2023/1/6/3147186457100288/3162047018139648/STEM/94d6421521354d009e64cf641c798136.png?resizew=126)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bf3bb6fc265edb63e78dab2a6dd3bed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e8a0c5f4a95fb2699860fd3f638737e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3bfd8d97e849fb2f797868b57ad67e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48b194460077cb089e533673b79e746f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f6c6426f8f8826f3f15e20fda9e1cfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7df01b912429b5d7cfb1bfbeb3169a2.png)
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A.①②③ | B.①②④ | C.①③④ | D.①②③④ |
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10 . 如图,在
中,F为
的中点,E为
上的一点,连接
交
于点G,交
的延长线于点M,
,
,
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/98af562e-3b4d-4d3b-8761-06b3f97f803d.png?resizew=216)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe5383ff62f7047721e61397694588a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/98af562e-3b4d-4d3b-8761-06b3f97f803d.png?resizew=216)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次