名校
1 . 如图,正方形
的边长为
,P为对角线
上动点,过P作
于E,
于F,连接
,则
的最小值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac2ef99db257cc1acb08e3a5e0006d49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f38a7c23203b624d8b6b543b8be81a25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/20/b7ccf55f-de58-4968-afe5-f2b1b2fbdca9.png?resizew=114)
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|
3卷引用:河北省保定市第十六中学2021-2022学年九年级上学期期末数学试题
名校
2 . 在正方形
中,对角线
、
交于点
,
的平分线交
于点
,交
于点
.过点
作
于点
,
交
于点
.下列结论:①
;②四边形
是菱形;③
;④若
,则
.其中正确的个数有( )
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868ff1350bd72625328c85c3097cd85e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c672f693a7e75a7bae4936dcb1920430.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3c3c36986071a9513a982aaadf6b0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb47209db3dc66c55535ed8ead09ed1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdcc1f812f0a219b49352f1a2a325c1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45271d5f049f5099109f05db373f981a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1dc83e1d9aaf071dbcbd6f4bbe60438.png)
A.4个 | B.3个 | C.2个 | D.1个 |
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6卷引用:湖北省武汉外国语学校2020-2021学年八年级下学期期中数学试题
湖北省武汉外国语学校2020-2021学年八年级下学期期中数学试题辽宁省鞍山市岫岩满族自治县联盟校2022-2023学年八年级下学期期中数学试题河北省保定市第三中学分校2023-2024学年九年级上学期月考数学试题(已下线)专题1.8 特殊平行四边形章末九大题型总结(拔尖篇)-2023-2024学年九年级数学上册举一反三系列(北师大版)山东省 济南市莱芜区莲河学校片区联盟2023-2024学年下学期八年级第二次月考数学试题 重庆市长寿中学校2023-2024学年八年级下学期4月期中考试数学试题
3 . 如图,正方形
中,
,点
为对角线
上的动点,以
为边作正方形
,点H是
上一点,
,连接
,则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a657111fecc2e6fad12144282c51b67a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
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5卷引用:山东省济南市长清区2020-2021学年八年级下学期期末数学试题
山东省济南市长清区2020-2021学年八年级下学期期末数学试题2022年河南省洛阳市二模数学试题2023年河南省洛阳市西工区中考一模数学试题2023年河南省濮阳市濮阳经济技术开发区实验学校中考数学模拟试题(已下线)专题14 一题多解型(5大模型+解题技巧)-2024年中考数学答题技巧与模板构建(全国通用)
名校
4 . 如图,在正方形
中,E是边
上的一动点,点F在边
的延长线上,且
,连接
、
.
;
(2)连接
,取
中点
,连接
并延长交
于
,连接
.
①依题意,补全图形:
②求证
;
③若
,用等式表示线段
、
与
之间的数量关系,并证明.
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/607cfabc1d421835b6b64109ad18f571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3efffb3e6a571832b723b3c5795b8e8c.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
①依题意,补全图形:
②求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b0eb389bbe576cf8d7d346e2390f95.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1250d4d4e24afce2b4f60c8928206b6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39addc1173a458af87ed5c5e3f06466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
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19卷引用:北京市昌平区昌平区第二中学2020-2021学年八年级下学期期中数学试题
北京市昌平区昌平区第二中学2020-2021学年八年级下学期期中数学试题北京市西城区第一六一中学2020-2021学年八年级下学期期中数学试题北京市昌平区北京师范大学昌平附属学校2020-2021学年八年级下学期期中考试数学试卷北京市161中2020-2021学年八年级下学期期中数学试卷北京市北京大学附属中学2021-2022学年八年级下学期期中数学试题(已下线)专题1.3 探索勾股定理(巩固篇)(专项练习)-2022-2023学年八年级数学上册基础知识专项讲练(北师大版)湖北省孝感市安陆市2021-2022学年八年级下学期期中数学试题河南省信阳市息县2021-2022学年八年级下学期期中数学试题(已下线)专题2.16 勾股定理(巩固篇)(专项练习)-2022-2023学年八年级数学上册基础知识专项讲练(浙教版)河南省信阳市2022-2023学年八年级下学期期中数学试题北京市第三十五中学2022~2023学年八年级下学期期中数学试卷 福建省龙岩市上杭县西北片区2022-2023学年八年级下学期期中考试数学试题(已下线)专题5.4 正方形与45°模型-2022-2023学年八年级数学下册同步精品课堂(浙教版)北京市海淀区首都师范大学第二附属中学2022—2023学年八年级下学期期中数学试卷河南省开封市鼓楼区第三十三中学2022-2023学年八年级下学期期中数学试题广西壮族自治区钦州市浦北县2022-2023学年八年级下学期期中数学试题(已下线)专题1.8 特殊平行四边形章末九大题型总结(拔尖篇)-2023-2024学年九年级数学上册举一反三系列(北师大版)江苏省南通市海安市海陵中学2023-2024学年八年级下学期4月月考数学试题北京市第一七一中学2023-2024学年八年级下学期期中数学试题
名校
5 . 如图,已知四边形
是正方形,
,点E为对角线
上一动点
,连接
.过点E作
,交
于点F,以
为邻边作矩形
,其中边
交
于H,交
于I.连接
.
;
(2)求证:矩形
是正方形;
(3)探究:
的值是否为定值?若是,请求出这个定值,若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080ca48cd27d4bf9d9ef084b558fc17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0285dfe83b2abfb6b1b23d049cb4979.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f0805cc7a96c866df10b667ac4851e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833ee84968e2c903b6350c23943b4fe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfef549bb89a75f211babeacc714e2e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba11242dcc61d3c7c3555b598b5fdc89.png)
(2)求证:矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
(3)探究:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d0292936ccbc591dc5f846313c061f1.png)
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17卷引用:广西壮族自治区南宁市新民中学2020-2021学年八年级下学期期中数学试题
广西壮族自治区南宁市新民中学2020-2021学年八年级下学期期中数学试题广东省广州市执信中学2020-2021学年八年级下学期期中数学试题(已下线)专题 18.59 平行四边形(全章复习与巩固)(巩固篇)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(人教版)(已下线)18.2.3 正方形(含2个课时)(练习)-2022-2023学年八年级数学下册同步精品课堂(人教版)(已下线)专练04 特殊平行四边形解答题综合(练习)-2022-2023学年八年级数学下册同步精品课堂(苏科版)(已下线)专练03 正方形解答证明题(练习)-2022-2023学年八年级数学下册同步精品课堂(苏科版)(已下线)第2章 四边形(A卷·知识通关练) -【单元测试】2022-2023学年八年级数学下册分层训练AB卷(湘教版)福建省龙岩市永定区2022-2023学年八年级下学期期中数学试题广东省惠州市惠东县第五片区2022-2023学年八年级下学期期中考试数学试题湖北省咸宁市嘉鱼县2022-2023学年八年级下学期期末数学试题湖北宣恩县高罗镇初级中学2022-2023学年八年级下学期期末数学试题山东省济宁市梁山县寿张集镇初级中学2023-2024学年九年级第一次模拟数学模拟试题广东省江门市江海区礼乐中学2023-2024学年八年级下学期期中数学试题广东省阳江市2023-2024学年八年级下学期期中数学试题广东省江门市江海实验教育集团2023-2024学年八年级下学期期中数学试题广东省惠州市小金茂峰学校2023-2024学年八年级下学期期中数学试题广东省东莞市南城开心实验中学2023-2024学年八年级下学期期中数学试题
6 . 如图,四边形
,
,
分别是以
的三边为一边的正方形,过点
作
的垂线,交
于点
,交
于点
,连接
,
.则下列结论:①
;②
;③
;④
.正确的有________ .(填序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b5d6fb0575139605d72e4feb9d2396b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d7267d1196794bb6754f76b3bd02170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c57b07f75e97d9f84718bd495ebcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184921a45f87423e92cf1e627ad55143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eadf4e951141370bd8ddcde4fcbc34f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c17b9346f3ef587e7b3ad2aafad81607.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ac7c266da4ae589e1bb9119bc7e2b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bceaa60747453615984b246c205b5fa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/22/69c578fe-2e76-4ff2-b894-cc59cfd707ff.png?resizew=163)
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122次组卷
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3卷引用:江苏省苏州市吴中区、吴江、相城区2021-2022学年八年级上学期期中数学试题
7 . 如图1,已知正方形
(正方形四条边都相等,四个角都是直角),把一个直角与正方形叠合,使直角顶点与点A重合,且直角的一边与
相交于E点,另一边与
的延长线相交于F点.
(1)求证:
;
(2)如图2,若作
的平分线交
于G点,连接
,请问线段
,
和
之间有怎样的数量关系?并加以证明.
(3)如图3,将图1中的“直角”改为“
”,当
的一边与
的延长线相交于E点,另一边与
的延长线相交于F点,连接
.线段
,
和
之间有怎样的数量关系?并加以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92034dd2bb9480b18709d01153467f8f.png)
(2)如图2,若作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e31edc5b71c488ca9942d70d9298f01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
(3)如图3,将图1中的“直角”改为“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192155e6a3aade305b76b1eb7c75e30c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e31edc5b71c488ca9942d70d9298f01.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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/6fe3c809-ab07-4749-98af-ae263e621336.png?resizew=491)
您最近一年使用:0次
8 . 如图,正方形
的对角线
与
相交于点
,将
绕点
顺时针旋转,设旋转角为
(
),角的两边分别与
,
交于点
,
,连接
,
,
,下列五个结论正确的有______ :①
;②
;③
;④
;⑤![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b39301eecfe10c82ef6be17f3e4a7e5.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0e1e2a60c37ebc303d4fc2bf3d6a234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a59f797fe4e6e655c19ca03fc7ab7954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf1448fdd27ef0fffaf2443ca1cca5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96bc0bb316fc0f6213ef38cab4544a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb394d858566fa6b53a29fd6f426244.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c449cb286d4fa1668f33d861fd26e589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b39301eecfe10c82ef6be17f3e4a7e5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/80d24be7-8d18-453e-8a1a-767ac6a201a1.png?resizew=149)
您最近一年使用:0次
9 . 已知:正方形
对角线
上一点
,点
在
上,连接
、
,
交
于点
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/6/634a3cae-fb90-4afa-a35b-1ef806f7ad39.png?resizew=437)
(1)如图1,求证:
;
(2)如图2,延长
交
于点
,连接
,求证:
;
(3)如图3,在(2)的条件下,若
,
,求
的长.
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c9b18e5ed62cc3b688795974d20a5ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/6/634a3cae-fb90-4afa-a35b-1ef806f7ad39.png?resizew=437)
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/193ea44749f1c64c8723e84a57d15cb9.png)
(2)如图2,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5472609c99516bb823d8dc4c38177da1.png)
(3)如图3,在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09e183424531815bec2abaa625dbabeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba11eab8bdcc94bad06db5dbfd6948e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
您最近一年使用:0次
名校
10 . 正方形
中,点F为正方形
内的点,
绕着点B按逆时针方向旋转90°后与
重合.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/8e6909f7-420d-4fef-942a-475bf59d6965.png?resizew=322)
(1)如图①,若正方形
的边长为2,
,求证:
.
(2)如图②,若点F为正方形
对角线
上的点(点F不与点A、C重合),试探究
之间的数量关系并加以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff00441c41fc516c37876d266fcbc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edac74b0b43760ebe9fe895201305a6c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/8e6909f7-420d-4fef-942a-475bf59d6965.png?resizew=322)
(1)如图①,若正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5988009779c78362ebfebb4eced84dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf7dc43a39738e3e2a0b819be505c6e.png)
(2)如图②,若点F为正方形
![](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/7b16ddb501c8dd9627dd82d76817f8cb.png)
您最近一年使用:0次
2023-10-07更新
|
196次组卷
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11卷引用:新疆维吾尔自治区新疆农业大学附属中学2021-2022学年九年级上学期期中数学试题
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