名校
1 . 某数学兴趣小组在数学课外活动中,研究三角形和正方形的性质时,作了如下探究,在
中,
,点D为直线
上一动点,(点D与不B,C重合),以
为边在
右侧作正方形
,连接
.
如图①当点D在线段
上时,①
与
的位置关系为______;
②
之间的数量关系为______(将结论直接写在横线上).
(2)数学思考
如图②,当点D在线段
的延长线上时,结论①,②是否仍然成立?若成立,请写出结论,若不成立,请写出正确的结论再予以证明;
(3)拓展延伸
如图③,当点D在线段
的延长线上时,延长
交
于点G,连接
,若已知
,请求出
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e794eb0d9121a96f63d3094ea8f999e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
如图①当点D在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23a0bb1290d9b19bafc3ff252297b4b.png)
(2)数学思考
如图②,当点D在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
(3)拓展延伸
如图③,当点D在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0c3b5251e796c386f7a178b8b9f21cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
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4卷引用:江西省新余市2022-2023学年八年级下学期期末数学试题
名校
2 . 如图,正方形
的对角线交于点O,点E、F分别在
、
上
,且
,
、
的延长线交于点M,
、
的延长线交于点N,连接
.
(1)求证:
;
(2)若正方形
的边长为6,
,求
的长.
![](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/e66e0f8079e2228623178ea43e8ba24a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d339426a8e80eb24414824d08c4564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/19/854dc737-4210-4c50-9a72-9f945b10740a.png?resizew=141)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2032fccdf9ab12429aae024d67b19d60.png)
(2)若正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe2f4b55386a2ccb5f88a5198ce97c1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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9卷引用:江西省新余市第一中学、高新一中2022-2023学年八年级下学期第二次段考数学试题
江西省新余市第一中学、高新一中2022-2023学年八年级下学期第二次段考数学试题广东省肇庆市端州区2018-2019学年八年级下学期期末数学试题江西省抚州市临川第一中学2019-2020学年九年级上学期10月月考数学试题辽宁省抚顺市顺城区2019-2020学年八年级下学期期末数学试题江西省抚州市崇仁县第二中学2021-2022学年九年级上学期期中数学试题(已下线)(挑战压轴)专题1.7 正方形模型-对角互补模型-2022-2023学年九年级数学上册《同步考点解读·专题训练》(北师大版)(已下线)第二次月考试卷-2022-2023学年九年级数学上册课后培优分级练(北师大版)(已下线)专题03 正方形的性质与判定(八大类型)-2023-2024学年九年级数学上册《知识解读·题型专练》(北师大版)(已下线)专题4.9 平行线分线段成比例(分层练习)-2023-2024学年九年级数学上册基础知识专项突破讲与练(北师大版)
真题
名校
3 . 如图,正方形
中,点
在边
上,点
是
的中点,连接
,
.
;
(2)将
绕点
逆时针旋转,使点
的对应点
落在
上,连接
.当点
在边
上运动时(点
不与
,
重合),判断
的形状,并说明理由.
(3)在(2)的条件下,已知
,当
时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62f9a3935cd124d021c7b18b0f634915.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da855fffaaffb54250a7da21d87666f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/1c8570940a970eefc631eec3c93ba3fc.png)
(3)在(2)的条件下,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0facaecb974fbea0285b980adae9912.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
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|
1510次组卷
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13卷引用:江西省新余市分宜中学2023-2024学年九年级下学期月考数学试题
江西省新余市分宜中学2023-2024学年九年级下学期月考数学试题2023年四川省南充市中考数学真题(已下线)专题14 几何综合题(37题)-学易金卷:2023年中考数学真题分项汇编(全国通用)(已下线)专题16 矩形、菱形和正方形-学易金卷:2023年中考数学真题分项汇编(四川专用)(已下线)专题19 图形的相似(含位似)-学易金卷:2023年中考数学真题分项汇编(四川专用)(已下线)专题22 几何压轴题-学易金卷:2023年中考数学真题分项汇编(四川专用)(已下线)专题13 三角形基础、全等三角形、等腰三角形和直角三角形-学易金卷:2023年中考数学真题分项汇编(四川专用)(已下线)专题20 平移、轴对称、旋转、中心对称-学易金卷:2023年中考数学真题分项汇编(四川专用)福建省宁德市霞浦县福宁学校2023-2024学年九年级上学期月考数学试题(已下线)2023年四川省南充市中考数学真题变式题22-25题(已下线)专题18 相似三角形-学易金卷:三年(2021-2023)中考数学真题分项汇编(四川专用)2024年湖北省天门市九校联考中考一模数学试题2024年福建省三明市三元区中考一模数学试题
4 . (1)计算:
.
(2)如图,在平行四边形
中,点
,
分别在边
,
上,且四边形
为正方形
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80fcd3fee333fff23346d7466a938962.png)
(2)如图,在平行四边形
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92034dd2bb9480b18709d01153467f8f.png)
![](https://img.xkw.com/dksih/QBM/2023/6/14/3259326729838592/3259494587301888/STEM/e377f9f77fc9448f90f13d6f5bdbda4b.png?resizew=262)
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真题
名校
5 . 已知,四边形
是正方形,
绕点
旋转(
),
,
,连接
,
.
,求证:
≌
;
(2)直线
与
相交于点
.
如图
,
于点
,
于点
,求证:四边形
是正方形;
如图
,连接
,若
,
,直接写出在
旋转的过程中,线段
长度的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d809b67606b7ecae68b13cd743a963a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b91f064bb73019053992fe781a53356a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7faabc484ce3666706c1beffda4bcfe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df7626240940eb340420a605e95aeee.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88583f8fb68d7158bedb4510279a0fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68bfc2d2fde52ed5f65824c182211109.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6a3a9baec1572be5c3b15ac2dec9dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377b5f7197e5bd1afeea4d931307956a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
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2022-09-25更新
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2783次组卷
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20卷引用:江西省新余市2023-2024学年八年级下学期期中数学试题
江西省新余市2023-2024学年八年级下学期期中数学试题2022年辽宁省阜新市中考数学试卷 山西省太原市三十六中2022-2023学年九年级上学期阶段反馈数学试题辽宁省阜新市阜蒙县育才初级中学2022-2023学年九年级上学期第二次质量检测数学试题(已下线)综合复习与测试(全册)(2)(专项练习)-2022-2023学年九年级数学上册基础知识专项讲练(人教版)山东省菏泽市牡丹区第二十一初级中学2022-2023学年九年级下学期3月月考数学试题(已下线)黄金卷8-【赢在中考·黄金8卷】备战2023年中考数学全真模拟卷(陕西专用)2023年山东省菏泽市巨野县中考一模数学试题 2023年山东省临沂市河东区中考二模数学试题(已下线)第05讲 正方形的性质与判定-【暑假自学课】2023年新九年级数学暑假精品课(北师大版)山东省菏泽市巨野县2022-2023学年九年级下学期期中数学试题湖南省常德市直学校联考2022-2023学年八年级下学期期中数学试题福建省龙岩市连城县冠豸中学2022-2023学年九年级下学期月考数学试题山东省济南市槐荫区济南第十二中学2022-2023学年八年级下学期5月月考数学试题安徽省宿州市埇桥区2023-2024学年九年级上学期第一次月考数学试题安徽省宿州市埇桥区教育集团2023-2024学年九年级上学期第一次月考数学试题(已下线)专题4.46 相似三角形几何模型(旋转模型)(培优练)-2023-2024学年九年级数学上册基础知识专项突破讲与练(北师大版)28-正方形(已下线)第8讲 正方形(已下线)专题11 四边形压轴题综合-2024年中考数学二轮热点题型归纳与变式演练(全国通用)
6 . 如图1,在正方形
中,点E是边CD上一点(点E不与点C、D重合),连接BE,过点A作
交BC于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/522aa702-b731-414d-a6c4-58c33133d96a.png?resizew=210)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/0d403e9e-9ea4-43f4-a336-c9ff9c0dea8b.png?resizew=200)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/bceb9e9a-890d-4356-9a2d-85b6b2461ff5.png?resizew=212)
(1)求证:
;
(2)如图2,取BE的中点M,过点M作
,交AD于点G,交BC于点H.
①求证:
;
②连接CM,若
,求GH的长;
(3)如图3,取BE的中点M,连接CM,过点C作
交AD于点G,连接EG、MG,若
,则四边形
的面积为________.(直接写出结果)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187ed13a7bd532bd39af5e5ad7493a2c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/522aa702-b731-414d-a6c4-58c33133d96a.png?resizew=210)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/0d403e9e-9ea4-43f4-a336-c9ff9c0dea8b.png?resizew=200)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/bceb9e9a-890d-4356-9a2d-85b6b2461ff5.png?resizew=212)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77245dda9e18f88f43905b192f98758a.png)
(2)如图2,取BE的中点M,过点M作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/179231788195dba7f08545a02b47883b.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5010595a0792e88fcc416e9eeaebec80.png)
②连接CM,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57b2c928c267d3fb111dabfda8235c1.png)
(3)如图3,取BE的中点M,连接CM,过点C作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55657561c876b865ffff25118708624b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09307b2858ce8da4bca9a519de9350ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f85ebf1cd601185e907ef64fb643f2fd.png)
您最近一年使用:0次
2022-07-14更新
|
138次组卷
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2卷引用:江西省新余市2021-2022学年八年级下学期期末数学试题
名校
7 . [特例感知]如图1,在正方形
中,点E,F分别为
,
的中点,
、
交于点G.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/27/5fa27199-e4bd-45a1-913d-93edae993da1.png?resizew=536)
(1)易证
,可知
、
的关系为___________________;
(2)连接
,若
,求
的长.
[初步探究]如图2,在正方形
中,点E为
边上一点,
分别交
、
于F、G,垂足为O.求证:
.
[基本应用]如图3,将边长为6的正方形
折叠,使得点A落在边
的中点M处,折痕为
,点P、Q分别在边
、
上,请直接写出折痕
的长:
________.
[应用拓展]如图4,在四边形
中,
,
,
,
,
于E,
交
于F,则
长为________.
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/27/5fa27199-e4bd-45a1-913d-93edae993da1.png?resizew=536)
(1)易证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0873d609fc773d037d78ec4551e08da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
[初步探究]如图2,在正方形
![](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/662ecc67db7277595a0b53d8e218f799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99bbc9286d44b05d523aaf998183b043.png)
[基本应用]如图3,将边长为6的正方形
![](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/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7330af1eaa4fbb442ebc7b47be6b6d7a.png)
[应用拓展]如图4,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b6e08fde74010412a6f14ad4dfbcc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ed3a08add0f389dbe3f7f74575faf45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f5dc11efe60b4fd9a13b1d6b83842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876bb8ce0ca53475fa091ffd18bdc94a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
您最近一年使用:0次
2022-06-21更新
|
692次组卷
|
3卷引用:江西省新余市第一中学、高新一中2022-2023学年八年级下学期第二次段考数学试题
江西省新余市第一中学、高新一中2022-2023学年八年级下学期第二次段考数学试题江西省宜春市高安市2021-2022学年八年级下学期期中数学试题(已下线)第08课 特殊平行四边形 解答题(难点3-解答证明与情景探究题)-2022-2023学年九年级数学上册课后培优分级练(北师大版)
名校
8 . 在正方形ABCD中,点F是边AB上一点,连接DF,点E为DF中点.连接BE、CE、AE.
![](https://img.xkw.com/dksih/QBM/2022/3/9/2932525681860608/2933757979271168/STEM/a124ed890e434b0a85843f97e801820b.png?resizew=122)
(1)求证:△AEB≌△DEC;
(2)当EB=BC时,求∠AFD的度数.
![](https://img.xkw.com/dksih/QBM/2022/3/9/2932525681860608/2933757979271168/STEM/a124ed890e434b0a85843f97e801820b.png?resizew=122)
(1)求证:△AEB≌△DEC;
(2)当EB=BC时,求∠AFD的度数.
您最近一年使用:0次
名校
9 . 如图,在正方形ABCD中,E是BC的中点,连接AE,过点B作射线BM交CD于点F,
交AE于点O,且BF⊥AE .
![](https://img.xkw.com/dksih/QBM/2022/2/7/2911366910615552/2930430364237824/STEM/50b5ccef91f1441589b46174409f3e69.png?resizew=157)
(1)求证:BF=AE;
(2)连接OD,猜想OD与AB的数量关系,并证明.
交AE于点O,且BF⊥AE .
![](https://img.xkw.com/dksih/QBM/2022/2/7/2911366910615552/2930430364237824/STEM/50b5ccef91f1441589b46174409f3e69.png?resizew=157)
(1)求证:BF=AE;
(2)连接OD,猜想OD与AB的数量关系,并证明.
您最近一年使用:0次
2022-03-06更新
|
325次组卷
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4卷引用:江西省新余市第一中学2021-2022学年八年级上学期期末数学试题
江西省新余市第一中学2021-2022学年八年级上学期期末数学试题江苏省无锡市宜兴市实验中学2021-2022学年八年级下学期3月月考数学试题(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(人教版)(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)
名校
10 . 已知正方形
,
是
的中点,请仅用无刻度的直尺按下列要求画图.(保留画图痕迹,不写画法)
![](https://img.xkw.com/dksih/QBM/2021/10/29/2839690988101632/2916112028999680/STEM/9f8e462e-2a8d-4c11-bebf-c9f82a602fbb.png?resizew=402)
(1)在图①中,画
,垂足为
;
(2)在图②中,画
,垂足为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/2021/10/29/2839690988101632/2916112028999680/STEM/9f8e462e-2a8d-4c11-bebf-c9f82a602fbb.png?resizew=402)
(1)在图①中,画
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d84733f9dc908ceb11459cc2aed580ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(2)在图②中,画
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb7efb72f7cd2c61ef89c741d9f0da7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
您最近一年使用:0次
2022-02-14更新
|
822次组卷
|
9卷引用:江西省新余市分宜县2022-2023学年八年级下学期期末数学试题
江西省新余市分宜县2022-2023学年八年级下学期期末数学试题江苏省南京市玄武区2020-2021学年八年级下学期期末数学试题江苏省南京市建邺区南京外国语学校河西初级中学2022-2023学年八年级下学期期中数学试题江苏省淮安市清江浦区2022-2023学年八年级下学期期末数学试题江苏省南京师范大学附属中学江宁分校2023-2024学年八年级下学期数学阶段练习题(3月20日)江苏省镇江市镇江第一外国语学校2023-2024学年八年级下学期期中数学试题江苏省无锡市江阴市南闸实验学校2023-2024学年八年级下学期3月月考数学试题江苏省扬州市广陵区2023-2024学年八年级下学期期中数学试题江苏省扬州市梅岭中学2023-2024学年八年级下学期期中数学试题