名校
1 . 如图,
为正方形
内一点,过
作直线
交
于点
,过
作直线
交
于
,
,且
.若
.以下结论:①
;②
;③
;④
,其中正确的有( )
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2f0dc39b4e4d3dcbf0baebc83221238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7630a5afafa255d7447c4c44935e4d67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33414e04055ea33031eb01b8aa357b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a886007744e33d41f0bc8c58a4431ad9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e03d3313735619b047b0ffb202ee87e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dbe9853e0513c50dfe032e925f74406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d6a2cc463b1fe91ac151633d531d292.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
2 . 已知正方形
,点 E,F,G 分别在边
上, 连接
,
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/4/fb6d5a8c-2f18-4f68-8ad2-c21a95ce3b14.png?resizew=431)
(1)若
于点H.
①如图 1,求证:
;
②如图 2,将
向下平移,当点G与D 重合时, 若E为
的中点,连接 HC,求
的值;
(2)如图;若
,且
,请你求出
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c0e1db02ed7997309a3a93750f0636.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7104f1eef00f5ac5a2ff12f384c0df5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/4/fb6d5a8c-2f18-4f68-8ad2-c21a95ce3b14.png?resizew=431)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adae1e4049698e4d10146651458d236a.png)
①如图 1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d71745d8b90963172b8e7b72da512d18.png)
②如图 2,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e57a13c665af88f326c9890072bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b616adadc6907b6102629cd8813fd19.png)
(2)如图;若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/308e5c5652c8d76afe52dbad1ed9835c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/795e740cb57615d48c36b416d5b93a9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e508a2988b9f7e922b42f7f8256b0d0a.png)
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3 . 如图,在正方形
中,
为
上一点,过点
作
,交
于
,交对角线
于
,取
的中点
,连接
,
,
.下列结论:①
;②
且
;③
;④
≌
;⑤若
,则
,其中哪些结论是正确的______ .(填序号)
![](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/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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.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/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/051dec8137e086c2dbb2cf752dce2934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bb21dc493f7b8b44570c008db21caf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51a1759a55e67a800fab189ef30842ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5ed0ea22dae5c21bc44d37622afbcd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd35bd406de97d29594aff377b213fac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b058127bcbfeb831be0f45ee34554066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ff62a77e88705b3ceace692717648c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/556deef1d3f4d97cea95211747b697ac.png)
您最近一年使用:0次
2023-11-07更新
|
248次组卷
|
2卷引用:湖南省长沙市雅礼教育集团2023-2024学年九年级上学期月考数学试题
4 . 如图1,在正方形
中,P是
的中点,E为边
上任意一点,连接
,将线段
绕点P逆时针旋转
得到线段
,连接
,交
于点G.
(1)若
,
,求
的长;
(2)如图2,点G恰好是
的中点,连接
,求证:
;
(3)如图3,将
沿
翻折,使得点B落在点Q处,连接
、
,若
,当
最小时,求出
的面积
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/21/bf8c2004-7c95-425d-9fdb-102286c34f1c.jpg?resizew=470)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338c6c83ab4abc895ac36ab888a55be6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
(2)如图2,点G恰好是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3063bfc9ac08dca068345dfa5c6e489.png)
(3)如图3,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c3a4638e2eb4e684b73416fb6a0f344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b15febfda66e733f14aa7115ed4343a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239d5db0ba4fee2c767bdf1458984a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b17f20c25bb16153b5f2d25062ed7a7.png)
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5 . 如图,点
是正方形
的对角线
上一点,
于点
,
于点
,连接
,给出下列四个结论:①
;②
;③
;④
.其中正确的有_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb8d58e0ddb759c7c5ea800b371b017.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e24ce1126ee700c08f82189bde0441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64cbcffe631d8354227ce3b40dc9244d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3297aea67ddce1e159e26731eecc8d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdab59f80b16375b650246a1085d5a3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f4782e3cdc6a5b6c93f62179e8c6d6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/8/031b4298-b26d-408f-b88c-92fa41465eb0.png?resizew=147)
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6 . “先天下之忧而忧,后天下之乐而乐”这是《岳阳楼记》中的一句千古名言,也是岳阳精神的真实写照,这句话具有鲜明的对称美.如果一个凸四边形沿着它的一条对角线对折后能完全重合,我们就把这个四边形称为“忧乐四边形”.如图1,凸四边形沿对角线
对折后完全重合,四边形
是以直线
为对称轴的“忧乐四边形”.
(1)下列四边形一定是“忧乐四边形”的有_______________(填序号)
①平行四边形;②长方形;③正方形;④菱形;⑤梯形
(2)在四边形
![](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/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
①如图2,若四边形是矩形,求证:四边形
是“忧乐四边形”.
②如图3,若四边形是平行四边形,①中的结论是否仍然成立,请说明理由.
(3)如图4,四边形
![](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/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e1f2b24a2e578abecb5e9814e1003b3.png)
您最近一年使用:0次
2023-07-06更新
|
185次组卷
|
4卷引用:湖南省岳阳市城区2022-2023学年八年级下学期期末数学试题
湖南省岳阳市城区2022-2023学年八年级下学期期末数学试题湖南省岳阳市岳阳楼区2022-2023学年八年级下学期期末数学试题(已下线)2023年四川省成都市中考数学真题变式题24-26题江苏省扬州市邗江区梅岭中学2023-2024学年八年级下学期3月月考数学试题
7 . (1)【问题探究】如图1,在正方形
中,点E、F、G、H分别在线段
、
、
、
上,且
.试猜想
的值,并证明你的猜想.
(2)【知识迁移】如图2,在矩形
中,
,
,点E、F、G、H分别在线段
、
、
、
上,且
.则求
的值(用含m,n的式子表示).
(3)【拓展应用】如图3,在四边形
中,
,
,
,点E、F分别在线段
、
上,且
.则
______.
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846b1b49f05812b0761eb565062d32f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/885a273360456694a3d40a913f3df2fc.png)
(2)【知识迁移】如图2,在矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa375c3888b332f24e7d0f9b9600c694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/890aea25780f7ba34adb23e799808462.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846b1b49f05812b0761eb565062d32f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/885a273360456694a3d40a913f3df2fc.png)
(3)【拓展应用】如图3,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b377f22aafd3742ad860f77abaacef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.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/b6b670ec1599330f6af99c600404afcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b190225659af07347e244e8eb73175cf.png)
您最近一年使用:0次
2023-02-18更新
|
376次组卷
|
5卷引用:湖南省永州市零陵区2022-2023学年九年级上学期期末质量监测数学试题
湖南省永州市零陵区2022-2023学年九年级上学期期末质量监测数学试题(已下线)专题07 相似三角形常考的模型及压轴题-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(湖南专用)2023年湖北省武汉市江夏区九年级下学期3月月考数学试卷(已下线)2023年武汉一模(几何综合)2023年河南省三门峡市中考数学模拟预测题
名校
8 . 如图,正方形
中,E为
的中点,
于G,延长
交
于点F,延长
交
于点H,交
于N下列结论:①
;②
;③
;④
;⑤
;其中正确结论的个数有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/19/46d9893c-3a82-41cf-8c84-46dd19e83995.png?resizew=153)
![](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/0565bafba84b317d92ac6855ab1c3468.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45344bd93f5943c84dade43ace6fdb84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50d3ad08110230946feb6b7cb15a671b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36f1720731dc2842cc0e458c9ebebaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c89b1d156149bd96e5de92d45d7bd4e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6166508e0058e7682535b9ccac5d1f84.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/19/46d9893c-3a82-41cf-8c84-46dd19e83995.png?resizew=153)
A.2个 | B.3个 | C.4个 | D.5个 |
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2023-01-16更新
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12卷引用:必刷卷03-2022年中考数学考前信息必刷卷(湖南长沙专用)
(已下线)必刷卷03-2022年中考数学考前信息必刷卷(湖南长沙专用)湖南省湘一立信实验学校2021-2022学年九年级上学期期末数学试题湖南省永州市祁阳市2022-2023学年九年级上学期期末拔优质量监测数学试卷广东省深圳市福田区南华实验学校2019-2020学年九年级上学期期中数学试题安徽省十五校联考2020-2021学年八年级下学期期末数学试题福建省莆田第八中学2021-2022学年九年级上学期第三次月考数学试题浙江省宁波市海曙区第十五中学2022-2023学年九年级上学期期中数学试题辽宁省辽阳市第一中学2022-2023学年九年级上学期学情调研(二)数学试题辽宁省辽阳市第一中学2022-2023学年九年级上学期第二次月考数学试题(已下线)第二十七章 相似 单元测试(B卷)-2022-2023学年九年级数学下册《同步考点解读·专题训练》(人教版)四川省宜宾市叙州区育才中学校2023-2024学年九年级上学期期中数学试题(已下线)期末压轴专题分类01(必刷60题15种题型专项训练)-2023-2024学年九年级数学上学期期末考点大串讲(北师大版)
名校
解题方法
9 . 在
中,
.点D(与点
不重合)为射线
上一动点,连接
,以
为一边且在
的右侧作正方形
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/2f678355-44fb-493c-90fa-7b7ceb8918d6.png?resizew=362)
(1)如果
.如图1,且点D在线段
上运动.试判断线段
与
之间的位置关系,并证明你的结论.
(2)如果
,如图2,且点D在线段
上运动.(1)中结论是否成立,为什么?
(3)若正方形
的边
所在直线与线段
所在直线相交于点P,设
,求线段
的长.(请先画出图形,用含x的式子表示
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27e47690ed332c573186992b6d25654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c971c23eafc50be8898b339ddefb37.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/2f678355-44fb-493c-90fa-7b7ceb8918d6.png?resizew=362)
(1)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb980da8e86b4cfd322616dc84fc6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(3)若正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075d6ed58f11b08c350f87cef654ba27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
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2022-11-19更新
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7卷引用:湖南省衡阳市华新实验中学2022-2023学年九年级上学期期中数学试卷
10 . 如图1,四边形ABCD是正方形,M是BC边上的一点,E是CD边的中点,AE平分∠DAM.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/11/bfdc6eb8-771e-4fba-a9f9-30bd2da20714.png?resizew=334)
(1)写出AM、AD、MC三条线段的数量关系: ;请对你猜想的结论进行证明;
(2)写出AM、DE、BM三条线段的数量关系: .(不必证明)
(3)拓展延伸:若四边形ABCD是长与宽不相等的矩形,其他条件不变,如图2,(1)、(2)中的结论是否成立?请分别作出判断,不需要证明.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/11/bfdc6eb8-771e-4fba-a9f9-30bd2da20714.png?resizew=334)
(1)写出AM、AD、MC三条线段的数量关系: ;请对你猜想的结论进行证明;
(2)写出AM、DE、BM三条线段的数量关系: .(不必证明)
(3)拓展延伸:若四边形ABCD是长与宽不相等的矩形,其他条件不变,如图2,(1)、(2)中的结论是否成立?请分别作出判断,不需要证明.
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