名校
1 . 【问题背景】如图1,两条相等的线段
,
交于点O,
,连接
,
,求证:
.
证明:过点C作
的平行线,过点B作
的平行线,两平行线交于点E,连接
.
,
.
四边形
为平行四边形,则
__________,
.
,
.
又
,
为等边三角形,
__________.
,即
.
(2)【迁移应用】如图2,矩形
中,
,
,点M在边
上,点
在边
上,点O在
上,过点O作
的垂线,交
于点F,交
于点E.
①求出
的值;
②求
的最小值.
(3)【联系拓展】如图3,
为等腰三角形,
,过点A作
的平行线l,点D在直线
上,点A到
的距离为2,求线段
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79684a6e92297749c005e2b23cac9710.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/d1c32278a1aaf76844cfec71ae0c50d6.png)
证明:过点C作
![](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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a1cd40abcd1eef24fac90af2371a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b43be568ae5186900cfb39484a3c9301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a876bc003f6c042c24ff4d8c11c8a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17101383eb0787edaaa35adfcd20d5c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a1cd40abcd1eef24fac90af2371a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db110fe5bd2f503ea8725e84e882871.png)
又
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9823cfdfafe1bd50f4ea9195bd1dd02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e315a652339e5c8a5fd87aca506629.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ec5d678ec42846e1d28301e3bfd4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b91b5505c3053000fce60090262fe6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1c32278a1aaf76844cfec71ae0c50d6.png)
(2)【迁移应用】如图2,矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
①求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba86ae4e81041a4237cb5cd98b55b9fd.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3e3d13205f9a2f3d2b2c180075f009.png)
(3)【联系拓展】如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
名校
2 . 在正方形
中,对角线
交于点O,E,F是
上的两点,连接
,分别过点B,F作
的垂线
,
,垂足分别为H,M.
,求证:
;
(2)若
,求证:
;
(3)若F是
的中点,探究线段
,
,
之间的数量关系,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989c75a3fd02e4971cab421c88de92f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdae78f4d3b8d8213ac3ac9a9567eb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2273ae1ee99cec9c1304323bc9ebf75f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14cbb17b9c763526f3573d9d133a5a80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d15618a9c1b6357b9c90fd8743f6efd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed0838c38ddf66eae718c7ad0f8a48e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90372a793c5b944ba7a5a26770fd1994.png)
(3)若F是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdae78f4d3b8d8213ac3ac9a9567eb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4cd68cc82e90a5e2049a7ea3171b84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2273ae1ee99cec9c1304323bc9ebf75f.png)
您最近一年使用:0次
3 . (1)【教材改编】如图1,四边形
是正方形,点G、E分别是边
、
的中点,
,且
交正方形外角的平分线
于点F.求证:
.
(2)【类比探究】如图2,四边形
是正方形,点E是
边上的任意一点,
,且
交正方形外角的平分线
于点P.求证:
.
(3)【知识迁移】在
边上是否存在点M,使得四边形
是平行四边形?若存在,请在图3画出图形并给予证明:若不存在,请说明理由.
![](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/7521601ac1fbc4a52d4fe44be9c8e88c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3767efa8adfb71001ad39df9560cbf6a.png)
(2)【类比探究】如图2,四边形
![](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/6b78356dbceb326e1b1561e0a15d8ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd72a32b01cde3803f106f00a83458c.png)
(3)【知识迁移】在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab17eb0eb1d6c18adeccdef2b62c826.png)
您最近一年使用:0次
名校
4 . (1)如图1,等腰直角
中,
,线段
经过点
,过
作
于点
,过
作
于
.求证:
.
(2)如图2,已知在平面直角坐标系
中,
为坐标原点,点
,点
.若
是以
为腰的等腰直角三角形,请直接写出点
的坐标;
(3)如图3,在
中,
,点
(不与点
重合)是
轴上一个动点,点
是
中点,连接
,把
绕着点
顺时针旋转
得到
(即
),连接
,试猜想
的度数,并给出证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d7d287e59b8033ee3c7540707ace3f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20c388d0a3f0a8d9fb0b9576d00af225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5c60ab4cdefda079244161bb911a453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172d93e9195e92d7924c0aea3d4c7eaa.png)
(2)如图2,已知在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/586d6b7a54a256cb0ecd0ea2d8262f6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2197c25dbc00126448f76263003d68.png)
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
(3)如图3,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0038fd38bb04187e5cb2d60099c720b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](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/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c57b07f75e97d9f84718bd495ebcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac2b7f71bb91845b4ff988a67fa0f6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33f47e84943266e04b2bbb5366e4c0b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6fc8bfdbf2a7e4ab5ef262b20611785.png)
您最近一年使用:0次
2024-03-07更新
|
124次组卷
|
3卷引用:广东省珠海市九洲中学2023-2024学年八年级上学期期中数学试题
广东省珠海市九洲中学2023-2024学年八年级上学期期中数学试题(已下线)压轴真题必刷01 三角形的证明(压轴40题7种题型训练)-2023-2024学年八年级数学下学期期中考点大串讲(北师大版)福建省三明市三元区列东中学2023-2024学年八年级下学期期中数学试题
5 . 已知,正六边形
,边长为6,G点以每秒为1的速度从
上运动,不与E点重合,同时,点H以同样的速度从
上运动,不与F点重合,连接
交于点I;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/90145603-91de-4926-b3d9-84423312af89.png?resizew=478)
(1)求
的度数.
(2)如图1,
是
的角平分线,过
点作
的垂线,垂足为J,当
是
的角平分线时,求证
.
(3)如图2,过B点作
的平行线,交直线
于点L,当G在运动的过程中,写出
之间的数量关系,并给出证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cce6d19529e68ace69c8b2effd0e180.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/363d10c6c1b8d753d3b014b3b34f0dbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e486df23106077926b68052bffdd45f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/90145603-91de-4926-b3d9-84423312af89.png?resizew=478)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b871a762469393cdd22f15aa49ebb8f9.png)
(2)如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71432131d194730a67f3192d1f8679b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/119629fc71e02ff9539decbf16c7296f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71432131d194730a67f3192d1f8679b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7eab036cb67e434bf8b3e9427a26cdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15732632869f8ff1d084d3f64ec9c39f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/253e64c34fe3dd0fd1c9018bb8116f68.png)
(3)如图2,过B点作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a6088611a62983d0fd1dd12788e8f5.png)
您最近一年使用:0次
6 . 综合与实践.
积累经验
(1)我们在第十二章《全等三角形》中学习了全等三角形的性质和判定,在一些探究题中经常用以上知识转化角和边,进而解决问题.例如:我们在解决:“如图1,
,
,且
于点D,
于点E.求证:
,只要证明
,即可得到解决;
类比应用
(2)如图2,在平面直角坐标系中,
中,
,点A的坐标为
点C的坐标为
,求点B的坐标.
拓展提升
(3)如图3,
在平面直角坐标系中,
,点A的坐标为
,点C的坐标为
,则点B坐标为________.
积累经验
(1)我们在第十二章《全等三角形》中学习了全等三角形的性质和判定,在一些探究题中经常用以上知识转化角和边,进而解决问题.例如:我们在解决:“如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daadcd54ede70b183d92857bc85cebf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a1d67cd32a1eef96809d2c4d066b6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6747120be6416f017e20c7d841ed2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d744f121ee858da2db4a516ea3f54cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc419074255db046997903924575d28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd6aa3e4e0cc1fa678ca5744f114fe73.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/e7332810-57fb-46ef-a750-ae47298c09ee.png?resizew=400)
类比应用
(2)如图2,在平面直角坐标系中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a1d67cd32a1eef96809d2c4d066b6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c765b84cce7c316ee12df72a86a1cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba75d9c2853a6e41c721f0148c96b6fd.png)
拓展提升
(3)如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daadcd54ede70b183d92857bc85cebf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec14ce756a84c514129847fb3fe5dea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80cfe493fa66af0d83d9db7ccae54ce.png)
您最近一年使用:0次
名校
7 . (1)某学习小组在探究三角形全等时,发现了下面这种典型的基本图形.如图1,已知:在
中,
,直线l经过点A,
直线l,
直线l,垂足分别为点D、E.证明:
.
(2)组员小刘想,如果三个角不是直角,那结论是否会成立呢?如图2,将(1)中的条件改为:在
中,
,D、A、E三点都在直线l上,并且有
,其中α为任意锐角或钝角.请问结论
是否成立?如成立,请你给出证明;若不成立,请说明理由.
(3)数学老师赞赏了他们的探索精神,并鼓励他们运用这个知识来解决问题:如图3,过
的边
、
向外作等腰
和等腰
,
是
边上的高,延长
交
于点I,求证:I是
的中点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40975f7553d8cfa57951b568bae9c464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5928c98b341b16d4b5a5b931d2929d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b190c8d3d7d7d0e6e959e8a52eae90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb773a664fa72fc5d8fe377e9f891901.png)
(2)组员小刘想,如果三个角不是直角,那结论是否会成立呢?如图2,将(1)中的条件改为:在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1cf8edbd31ff7e27c784c8688b537a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb773a664fa72fc5d8fe377e9f891901.png)
(3)数学老师赞赏了他们的探索精神,并鼓励他们运用这个知识来解决问题:如图3,过
![](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/16834582e86f9c1030a4a4b316fab909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ce497569436aa4db106121018162ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184921a45f87423e92cf1e627ad55143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/5/8ef621c3-aa56-414a-9417-f4e940c09482.png?resizew=402)
您最近一年使用:0次
2023-11-01更新
|
372次组卷
|
29卷引用:广东省广州市白云区白云实验学校2022—2023学年八年级上学期数学期末试卷
广东省广州市白云区白云实验学校2022—2023学年八年级上学期数学期末试卷广东省惠州市北大培文大亚湾实验学校2023-2024学年八年级上学期(贯通班)月考数学试题(已下线)(培优特训)专项4.2 全等三角形综合应用高分必刷-2022-2023学年七年级数学下册《同步考点解读·专题训练》(北师大版)(已下线)专题04 三角形(13个考点)【考点串讲+热点题型专训】-2022-2023学年七年级数学下学期期中期末考点大串讲(北师大版)(已下线)综合复习与测试(3)挑战综合(压轴)题分类专题(专项练习)-2022-2023学年七年级数学下册基础知识专项讲练(北师大版)山西省太原市小店区山西大学附属中学校2022-2023学年七年级下学期期中数学试卷(已下线)综合复习与测试(5)(期末模拟测试卷)-2022-2023学年七年级数学下册基础知识专项讲练(北师大版)陕西省西安市益新中学2022-2023学年七年级下学期第二次月考数学试题 福建省三明市宁化县2021-2022学年七年级下学期期中数学试题江苏省如皋市石庄镇初级中学2022-2023学年八年级上学期第一次阶段性测试数学试卷内蒙古呼和浩特市第二中学刺勒川分校2023-2024学年八年级上学期10月月考数学试题(已下线)专题12.7 全等三角形章末八大题型总结(拔尖篇)-2023-2024学年八年级数学上册举一反三系列(人教版)广西壮族自治区南宁市青秀区三美学校2022-2023学年八年级上学期期中数学试题浙江省台州市临海市第六教研区2023-2024学年八年级上学期期中检测数学试题江苏省连云港市东海县西部四校联考2023-2024学年八年级上学期10月月考数学试题广西壮族自治区贵港市桂平市2023-2024学年八年级上学期期中数学试题(已下线)专题13.13 全等三角形章末十五大题型总结(拔尖篇)-2023-2024学年八年级数学上册举一反三系列(华东师大版)山东省威海市威海经济技术开发区威海经济技术开发区皇冠中学2023-2024学年七年级上学期期中数学试题山东省济宁市金乡县2023-2024学年八年级上学期期中数学试题福建省龙岩市上杭县东北、东南、西南片区2023-2024学年八年级上学期期中数学试题山东省济宁市金乡县教育教学研究中心2023-2024学年八年级上学期期中数学试题(已下线)专题14.7 全等三角形章末八大题型总结(拔尖篇)-2023-2024学年八年级数学上册举一反三系列(沪科版)山东省临沂市平邑县2023-2024学年八年级上学期期中数学试题(已下线)专题1.7 全等三角形章末八大题型总结(拔尖篇)-2023-2024学年八年级数学上册举一反三系列(苏科版)(已下线)专题1.13 三角形的初步知识章末十六大题型总结(拔尖篇)-2023-2024学年八年级数学上册举一反三系列(浙教版)湖南省麻阳苗族自治县锦江中学2023-2024学年八年级上学期期中数学试题山东省济宁市鱼台县2023-2024学年八年级上学期期中考试数学试题福建省龙岩市上杭县片区十八校2023-2024学年八年级上学期期中数学试题湖南省娄底市娄星区2023-2024学年八年级上学期期末数学试题
名校
8 . 已知在正方形
中,
、
分别为
、
边上的动点,且
,连接
、
交于点
,点
为正方形
对角线的交点.
①猜想线段
与
之间有怎样的数量和位置关系?请直接写出你的猜想,不需证明;
②下列结论:甲同学认为
的值不变;乙同学认为:
的值不变,其中只有一个结论正确,请选择正确的结论并求其值;
(2)如图2,
是等腰三角形,
,求证:
.
![](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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a55e0dbe56355e391371a92a3bbeac26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
①猜想线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
②下列结论:甲同学认为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1d97df4a082da1347b47afd61287621.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f97b308d9fbf983a4357eabe697d3d0.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a68f71476e365d4c354bd1f6963d1065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/817451e56cc8a4b8d9134486fc15437a.png)
您最近一年使用:0次
2023-07-20更新
|
612次组卷
|
4卷引用:广东省广州市海珠区2022-2023学年八年级下学期期末数学试题
广东省广州市海珠区2022-2023学年八年级下学期期末数学试题广东省广州市越秀区广州大学附属中学2023-2024学年九年级上学期开学考数学试题(已下线)专题03 平行四边形两种压轴题专项训练-备战2023-2024学年八年级数学下学期期末真题分类汇编(广东专用)(已下线)八年级数学期末模拟卷01(人教版,十六~二十章)-学易金卷:2023-2024学年初中下学期期末模拟考试
名校
9 . (1)如图1,四边形
是正四边形,
在
的内部绕点A转动,若
平分
.求证:
平分
.
是正四边形,
,
绕点A旋转,
的边与
的延长线交于点
,与
的延长线交于点
,判断
、
、
的数量关系并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e31edc5b71c488ca9942d70d9298f01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2ee75a234ac05a3225e49ddd8c5065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6c19410c7abeae002ca97cfad4c791f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](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/1e31edc5b71c488ca9942d70d9298f01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
您最近一年使用:0次
2022-12-07更新
|
307次组卷
|
3卷引用:广东省广州市广东实验中学2023-2024学年八年级上学期期中数学试题
广东省广州市广东实验中学2023-2024学年八年级上学期期中数学试题(已下线)专题05 平行四边形与旋转问题压轴题专项训练-【好题汇编】2023-2024学年八年级数学下学期期中真题汇编(广东专用)湖北省武汉市江岸区、东西湖区2022-2023学年八年级上学期期中考试数学试卷
10 . 在等腰直角
中,
,P是线段
上一点(与点B、C不重合),连接
,延长
至点Q,使得
,过点Q作
于点H,交
于点M.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/fe98cf88-f6bf-4996-9624-16b5c83179a1.png?resizew=170)
(1)求证:
;
(2)若
,求
的长;
(3)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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b3edff9db1e33a61f0d7d3b9406cc09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7210c2fbdb84b991377bf492e29cd8a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9d3bfa5421c8a6a44e59f2496113fab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/fe98cf88-f6bf-4996-9624-16b5c83179a1.png?resizew=170)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a96c0b4e2687ee228f2ec3781b1b063.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfb76a9d8c715cfe16a8d2d9e245d064.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a8588dc60a543ad70d6bc0d263dbd3.png)
(3)用等式表示线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
您最近一年使用:0次