名校
1 . 如图,P是正方形
的边
右侧一点,
,
为锐角,连接
,
.
(1)(1)如图①,若
,求
的度数;
(2)如图②,作
平分
交
于E.
①
的度数是___
;
②探究
,
,
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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/436ac37109fc061e35157083fd1093ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d221944148d71e2e1bc76040aefb8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/15/f00b4462-4dd1-4c72-aab3-d1ced725b225.png?resizew=359)
(1)(1)如图①,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c8a72acdef14452a6c62f2a60a15fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbf1667b21a273bf5dd007d65eeda7c.png)
(2)如图②,作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d221944148d71e2e1bc76040aefb8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6282292819434a8905a212427613fd85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
②探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
您最近一年使用:0次
名校
2 . 如图,在正方形
中,点
在
边上,点
在
边上,
,连接
,与对角线
交于点
.
(1)如图1,求证:
;
(2)如图2,过点
作
于点
,交
边于点
,求证:
;
(3)如图3,在(2)的条件下,连接
,若
,
,求
的长.
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92034dd2bb9480b18709d01153467f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/15/5fde2390-0ac8-45e3-a826-8e109ee38fb8.png?resizew=370)
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/242d93cde1f75849bb6ba5f79c3ce4c0.png)
(2)如图2,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b39e2f6265f3ba543f997fdc3b2f165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da5460c0767ca29652f070159d6477a.png)
(3)如图3,在(2)的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f64c372f6162c32675bfc005cffa6956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e5827a87042613db991da4de0aa805c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5960a5149db69e3f292c59feaa24ba85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f64c372f6162c32675bfc005cffa6956.png)
您最近一年使用:0次
名校
3 . 在正方形
中,E、F分别为
边上的两点,连接
、
并延长交于点Q,H为
上一点,连接
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/18/9b65a22d-94b6-44b4-a449-0a935d70fab9.png?resizew=563)
(1)如图1,若H为
的中点,且
,
,求线段
的长;
(2)如图2,过点H作
,且HB=HP,刚好交
的中点G,当
时,求证:
;
(3)如图3,在(1)的条件下,点M为线段
上一动点,作
于点N,将
沿
翻折得到
,且
,
,连接
,请直接写出
面积的最大值.
![](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/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdae78f4d3b8d8213ac3ac9a9567eb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e4fa04825ac7d071968056322d88be.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/18/9b65a22d-94b6-44b4-a449-0a935d70fab9.png?resizew=563)
(1)如图1,若H为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0389406fa7c5d41df89c87a17928edd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee00979f981a6a6c72454712b62c960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)如图2,过点H作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75cfb63a34185f925816846aa901b311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294546dfcb836654053f5e6e967cc6e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f359aeb40d64312310f1c191acd478e.png)
(3)如图3,在(1)的条件下,点M为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23539741f044690dcba16777a328393d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1275768bdac801185ef152290a85ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1275768bdac801185ef152290a85ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14fbd099091b56b6dd16a00b5bd14b7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae35db8f9f301928c4f6ccee09e8bc07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc93e193fad261689949a52819753f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff36ac07c45c8d03cf3b7d8739c517ca.png)
您最近一年使用:0次
名校
4 . 正方形
中,点
在
上,点
在
上,连接
、
交于点
,且
.
(1)如图1,连接
,求
的度数;
(2)如图2,点
在
边上,且
,求证:
;
(3)如图2,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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faf1e7e6040de15aeac9fed4358d04e7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/6/f58d2bd6-76fc-4903-aad7-2c80589f1517.png?resizew=308)
(1)如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e6567f04a1bfbf57c21ac8bc4893375.png)
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51c4d99b6db7d6de1c6c83f166bf961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ae7275d389025e66f760225feea122.png)
(3)如图2,在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05aa03ad9b424cdec3812cb8714902ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eeb94acdc3de00655e6e29d5372da09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
您最近一年使用:0次
5 . 如图①,正方形
中,
为
上一点,
交
于点
,
、
分别是
和
的中点,延长
交
于点
,
交
于点
,交
于点
.
(1)求证:
;
(2)求证:
;
(3)如图②,当
时,求
的值.
![](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/876bb8ce0ca53475fa091ffd18bdc94a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.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/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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/3/5fbfe913-bde5-4162-9c65-b55e50778dbf.png?resizew=302)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3372044c4d1339d8e8fe68c984c9752.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dccc4ab869692e3dad49d06e347ed3fd.png)
(3)如图②,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/917191e297cdd2ba3ac985e8054e1627.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/179b8f6c39b231339bb19251e22f7e17.png)
您最近一年使用:0次
名校
6 . 点
为正方形
对角线
与
的交点,点
为直线
上一点(点
与点
,点
,点
不重合),连接
.
(1)如图,若点
为
的中点,
,求
的面积;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/27/127b3a73-2149-4a16-9a6b-f09691a44a48.png?resizew=141)
(2)如图,若点
在线段
上,过点
作
交
于点
,交
于点
.过点
作
交
于点
.求证:
;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/27/657bb540-4535-4c54-a219-305537fad5ac.png?resizew=141)
(3)若点
为直线
上一动点,其它条件与(2)问条件不变.请写出线段
,
,
之间的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(1)如图,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/27/127b3a73-2149-4a16-9a6b-f09691a44a48.png?resizew=141)
(2)如图,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/992a19339adac3a2f1aab1fbc11b1c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2120afec47faaeaa6959808d1ec7bfc8.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/28e0b3f2ad2db591c3ae2f2725e4078f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/27/657bb540-4535-4c54-a219-305537fad5ac.png?resizew=141)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/27/5467ee01-6395-4979-a706-2876e64ca5b7.png?resizew=141)
您最近一年使用:0次
2022-07-24更新
|
545次组卷
|
3卷引用:重庆市渝中区第二十九中学校2022-2023学年九年级上学期数学开学测试试题
重庆市渝中区第二十九中学校2022-2023学年九年级上学期数学开学测试试题重庆市沙坪坝区2021-2022学年八年级下学期期末数学试题(已下线)第一次月考难点特训(二)与特殊平行四边形有关的压轴题-【微专题】2022-2023学年九年级数学上册常考点微专题提分精练(北师大版)
名校
7 . (1)如图1,在正方形ABCD中,点E,F分别是AB,AD上的两点,连接DE,CF,若
,则
的值为______;
(2)如图2,在矩形ABCD中,
,
,点E是AD上的一点,连接CE,BD,若
,则
的值为______;
(3)如图3,在四边形ABCD中,
,点E为AB上一点,连接DE,过点C作DE的垂线交ED的延长线于点G,交AD的延长线于点F,求证:
;
(4)如图4,在
中,
,
,将
沿BD翻折,点A落在点C处,得到
,点F为线段AD上一动点,连接CF,作
交AB于点E, 垂足为点G,连接AG.设
,求AG的最小值.
![](https://img.xkw.com/dksih/QBM/2022/3/2/2927644228231168/2932492463161344/STEM/dda7b6d9-4ad1-4a38-af26-45e0d8088668.png?resizew=493)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f87b02b744534ae1ed700d21fcceb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ada5e380d6b5b2066e34497e5f0baf0.png)
(2)如图2,在矩形ABCD中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c1e75eb744576c32eed3f9d20f9558.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e673ef2d48215ca84a48377f17d6df00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a45b04cc3e5adaeff6f9e01e29032803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8775dcf60ad143bc59a58b000f374c56.png)
(3)如图3,在四边形ABCD中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41aba1711910c6f533cc94319104f4fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e97080b39cc4448164fbe62f296e44.png)
(4)如图4,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/068dd508ca4182106e02589c533297c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0d7095ddd69d6ceaf1065b1bc2c79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a259656caff73f08304c865fe8f5205e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73636989e83905f8800a865c2b608c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f87b02b744534ae1ed700d21fcceb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10384aed1cfcf1f031768cb3e1ad94dd.png)
![](https://img.xkw.com/dksih/QBM/2022/3/2/2927644228231168/2932492463161344/STEM/dda7b6d9-4ad1-4a38-af26-45e0d8088668.png?resizew=493)
![](https://img.xkw.com/dksih/QBM/2022/3/2/2927644228231168/2932492463161344/STEM/afda74de-771a-48a9-b7c6-0ac92a6b9312.png?resizew=239)
您最近一年使用:0次
名校
解题方法
8 . 如图,在正方形
中,点
为
边上一点,且
,点
为对角线
上一点,且
,连接
交
于点
,过点
作
于点
,若
,则正方形
的边长为_______ cm.
![](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/620bc4cfb53594c834b9afcbc3de516a.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/c2578e2e741cc009bb3f1c742fc669f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1c31f727a845520711124b398da2dbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c51dbcf9423284d177594bbdc631ab56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2021-09-01更新
|
787次组卷
|
4卷引用:黑龙江省哈尔滨市工大附中2020-2021学年九年级上学期开学学情检测数学试题
黑龙江省哈尔滨市工大附中2020-2021学年九年级上学期开学学情检测数学试题黑龙江省哈尔滨市道里区东湖路中学2021-2022学年九年级下学期开学考试数学试题黑龙江省 哈尔滨市第七十二中学2023-2024学年九年级下学期开学考试数学试题(已下线)易错模型02+相似模型1(十大易错分析+变式训练+易错题通关)-备战2024年中考数学考试易错题(全国通用)
名校
9 . 在正方形ABCD中,点E是BC边上一动点,连接AE,沿AE将△ABE翻折得△AGE,连接DG,作△AGD的外接⊙O,⊙O交AE于点F,连接FG、FD.
(1)求证∠AGD=∠EFG;
(2)求证△ADF∽△EGF;
(3)若AB=3,BE=1,求⊙O的半径.
(1)求证∠AGD=∠EFG;
(2)求证△ADF∽△EGF;
(3)若AB=3,BE=1,求⊙O的半径.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/27/4ee2b217-7839-4dcf-8231-e8c9886f424f.png?resizew=165)
您最近一年使用:0次
2020-06-28更新
|
803次组卷
|
6卷引用:江西省南昌市外国语学校2022-2023学年九年级下学期开学考数学试题
名校
10 . 已知正方形
与正方形(点C、E、F、G按顺时针排列),M是AF的中点,连接DM、EM,.
在边CD上,点G在BC的延长线上,
求证:
=ME,
⊥.ME
简析: 由是的中点,AD∥EF,不妨延长EM交AD于点N,从而构造出一对全等的三角形,即 ≌ .由全等三角形性质,易证△DNE是 三角形,进而得出结论.
(2)如图2, 在
的延长线上,点在上,(1)中结论是否成立?若成立,请证明你的结论;若不成立,请说明理由.
(3)当AB=5,CE=3时,正方形的顶点C、E、F、G按顺时针排列.若点
在直线CD上,则DM= ;若点E在直线BC上,则DM= .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
简析: 由是的中点,AD∥EF,不妨延长EM交AD于点N,从而构造出一对全等的三角形,即 ≌ .由全等三角形性质,易证△DNE是 三角形,进而得出结论.
(2)如图2, 在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
(3)当AB=5,CE=3时,正方形的顶点C、E、F、G按顺时针排列.若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
您最近一年使用:0次
2019-10-15更新
|
847次组卷
|
4卷引用:广东省梅州市平远县坝头中学2022-2023学年九年级下学期开学数学试题