名校
1 . 如图,
与
交于点
,
,
,
为
延长线上一点,过点
作
,交
的延长线于点
.
![](https://img.xkw.com/dksih/QBM/2023/4/20/3220676029399040/3220842079387648/STEM/22b3b59a20d84ce8aeddae6bc45f14b5.png?resizew=199)
(1)求证:
;
(2)若
,
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c35c43d90814396ff06336fa45e9650.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fce3fed1c4d2b99335b8f13f8d3dfdfe.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/117878cbd8c00f2aabcdf62b487e2dc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2023/4/20/3220676029399040/3220842079387648/STEM/22b3b59a20d84ce8aeddae6bc45f14b5.png?resizew=199)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91d6d39d7f85d517485a61f28ee0430a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0761165f1176f3a5fe4f7b052832316d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
您最近一年使用:0次
2023-04-20更新
|
220次组卷
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4卷引用:2022年贵州省铜仁市碧江区中考二模数学试题
2022年贵州省铜仁市碧江区中考二模数学试题2023年广东省珠海市香洲区桃园拱北五中、前山中学中考一模数学试题2023年广东省茂名市茂南区部分学校中考三模数学试题(已下线)2023年上海市中考数学真题变式题20-25题
20-21九年级·全国·假期作业
名校
2 . 如图,点A在线段
上,在
的同侧作等腰直角三角形
和等腰直角三角形
(
和
是直角),连接
,
交于点P,
与
边交于点M,对于下列结论:①
;②
;③
;④
,其中正确的个数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/31/68038f96-70ef-4ff9-8d02-36aaa5273887.png?resizew=265)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cd1bc0388e7fad3e849ca39c67f5034.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca61809c5ea19badd8727c4ba5b519b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d5942a81561bf6617281126e97e5595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6db0b1a0ef503e0717a355236f3f40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa69eadab21d1eead26f8bd85cfc249b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/31/68038f96-70ef-4ff9-8d02-36aaa5273887.png?resizew=265)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
2023-03-28更新
|
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10卷引用:贵州省铜仁市松桃苗族自治县2020-2021学年九年级上学期期末数学试题
贵州省铜仁市松桃苗族自治县2020-2021学年九年级上学期期末数学试题(已下线)练习07 相似三角形的性质-2020-2021学年【补习教材·寒假作业】九年级数学(沪科版)福建省泉州市晋江市第一中学、晋江华侨中学2021-2022学年九年级上学期期中数学试题湖南省衡阳市石鼓区2021-2022学年九年级上学期期末数学试题浙江省杭州市上城区建兰中学2021-2022学年九年级上学期期中数学试题福建省泉州市晋江市实验片区联考2022-2023学年九年级上学期期中数学试题陕西省榆林市府谷县2021-2022学年九年级上册期中考试数学试题湖南省株洲市醴陵市2022-2023学年九年级上学期期末数学试题陕西省榆林市子洲县2021-2022学年九年级上学期期中数学试题陕西省榆林市第六中学2021-2022学年九年级上学期第一次月考数学试题
3 . 点
在四边形
的对角线
上,直角三角板
绕直角顶点
旋转,其边
、
分别交
、
边于点
、
.
操作发现:如图①,若四边形
是正方形,当
时,可知四边形
是正方形,显然
.当
与
不垂直时,判断确定
、
之间的数量关系;______.(直接写出结论即可)
类比探究:如图②,若四边形
是矩形,试说明
.
拓展应用:如图③,改变四边形
、
的形状,其他条件不变,且满足
,
,
,
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d246f9eceab371ebf47a47c2f11a4ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
操作发现:如图①,若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31a470095e295c734a2f368cc6baf1b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3029ea5516e56e8d20594c71929624f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acd79bb9fb06f7c806eb6e17e4b613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
类比探究:如图②,若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e690473a729f961f124b577c9d938b.png)
拓展应用:如图③,改变四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21f33f67c211c6acf59bef108ef88a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95bde1fb33aeb9523ea29dcb5338bfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8d08ed44ae7ed558a9d7d4c21c2e3e.png)
您最近一年使用:0次
2023-03-13更新
|
290次组卷
|
6卷引用:2023年贵州铜仁第五中学中考数学一模试题
4 . 如图,在
中,
,高
,正方形
一边在
上,点E,F分别在
上,
交
于点N,则
的长为( )
![](https://img.xkw.com/dksih/QBM/2022/11/9/3105943211237376/3173928696905728/STEM/527d98a8d9484cae81fca023c3ed4ee1.png?resizew=176)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b697b4b6230d62b428fce3c27571ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c99154aec25bfa23baa5343bf0c21991.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://img.xkw.com/dksih/QBM/2022/11/9/3105943211237376/3173928696905728/STEM/527d98a8d9484cae81fca023c3ed4ee1.png?resizew=176)
A.10 | B.15 | C.20 | D.30 |
您最近一年使用:0次
5 . 如图,在
中,
是
的中点,作
交
于点
,连接
交
于点
,作
交
于点
,连接
交
于点
,作
交BC于点
,……,作
交
于点
,若
,则
的长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f5b24ada174b5aec63f4a7e89d3d64c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/522230546d4b802094e86ceb48c2ba38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b7287da1de38b00f62a255ab1b9c6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6afb5c6e2d0469bfdec81be42542bdc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f63fa4f99534f9c6e433fa068df434.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4f150ab98bde511e0f65d9bafab031.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a8085882b23d697348eae30de9739f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6afb5c6e2d0469bfdec81be42542bdc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dacb04fa29178c0af4353e4369a7e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71913c9c268865b2e04c11e5cd498c13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b4dbe5d5c8b9c28c6f5eb92278a9f17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e5246bf61d2eb950f92bf24af7f7ba1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a78b3c84e7818ed70018eea40c72665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca036d049f5205cf04cb1b9c5cd03f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54651794b71c1f94416b2f8f37b74af7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/21/20e7fbe2-8c44-4746-8a55-7e24982376d6.png?resizew=244)
您最近一年使用:0次
6 . 如图,在
中,
,若
,
,
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/6/ea65ab18-4f6c-457a-a04f-f104a8b192bb.png?resizew=108)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436f108fd4921dae15ecff19270237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a5546121164a27a65f68610e3ac9263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c64a407ff13b3b962fcd78f95f21f262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbff84327e964f912a54032e76ccc9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/6/ea65ab18-4f6c-457a-a04f-f104a8b192bb.png?resizew=108)
A.4 | B.8 | C.9 | D.12 |
您最近一年使用:0次
2023-02-28更新
|
47次组卷
|
4卷引用:贵州省铜仁市第十一中学2022-2023学年九年级下学期第一次月考数学试题
贵州省铜仁市第十一中学2022-2023学年九年级下学期第一次月考数学试题2021年云南省文山州初中学业水平模拟考试数学试题(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-基础)河南省开封市祥符区2022-2023学年九年级上学期期末数学试题
7 . 如图,在
和
中,
,
,
,点
在
内,连接
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/02877754-9f71-4dc0-b969-9d1d2efcb75f.jpg?resizew=164)
(1)求证:
;
(2)若
,
,求
的长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34323137ddb894a70d97511aa5fe6f98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08d9bf69aadd34af9a68cfb3553d9286.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/37c2240a883d4b245b410c365b135c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66ccda137a92ff6954cb469bad3b239d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/02877754-9f71-4dc0-b969-9d1d2efcb75f.jpg?resizew=164)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f7e606ae1c264819d08cbfa0a77b89.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6813cfccfba3043fc567b0dadf76d229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b0393ce62b24aa5f9b740d4cc6743b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
您最近一年使用:0次
8 . 如图,在四边形
中,对角线
,
相交于点O,
,
,
,
,则
的长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c828839ec7daffe75d61c24298afe7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fdc255d96c72c7f93ccf788b27ebba6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec2661210620d647099c702cd6d6732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd8ace9be68f18a8719b2a33ac38c91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/2022/11/3/3101775229493248/3182043571601408/STEM/3ecc814064e243468db0896436e3d5c9.png?resizew=183)
您最近一年使用:0次
9 . 如图,在平面直角坐标系中,
的顶点B的坐标为
,
平分
交
于点C,反比例函数
的图象经过点A,C.若
,则k的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/60563b54-6990-4f98-ae3d-84b73f0bf24f.png?resizew=164)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edb13bbc5335efc427f9c619a51dae3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9510caac8a3fd09196323308e835ed1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d72d494123371c165256492041855928.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/60563b54-6990-4f98-ae3d-84b73f0bf24f.png?resizew=164)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
10 . 如图,在
中,点D,E分别在
,
边上,
.若
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/6a668cf7-c1e9-4c08-a473-168a65e7718d.png?resizew=135)
![](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/c436f108fd4921dae15ecff19270237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0c0a8e2f1847f9d78ad367d8ee8ae10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b385329fa0199e30da2ccfdf559ebf70.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/6a668cf7-c1e9-4c08-a473-168a65e7718d.png?resizew=135)
A.2 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次