1 . 如图,在
中,
平分
,
,延长
到点
,使得
,连接
.
;
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc13fe21e64d9b45614ed43be847904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5fc6ead6416492c231c320a5486f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b3e9a99b5b8258baab51f66d1a48ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a3ee6ec04937f0eec4122b2e8fdc4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db866ecc0c098bfc32ec8a43b65bdd58.png)
您最近一年使用:0次
2024-03-16更新
|
234次组卷
|
5卷引用:2023年江浙省杭州市临平区中考二模数学试题
2023年江浙省杭州市临平区中考二模数学试题2023年浙江省杭州市西湖区西溪中学中考数学二模模拟试题(已下线)第09讲 与全等三角形有关的计算和角的证明与计算-【暑假自学课】2023年新八年级数学暑假精品课(人教版)(已下线)专题5.3 简单的轴对称图形——角平分线(知识梳理与考点分类讲解)-2023-2024学年七年级数学下册基础知识专项突破讲与练(北师大版)(已下线)第5章 生活中的轴对称(单元测试·培优卷)-2023-2024学年七年级数学下册基础知识专项突破讲与练(北师大版)
2 . 如图1,已知点
在
内,连结
,
,
,
,
,在
下方作
,使
,
.
![](https://img.xkw.com/dksih/QBM/2023/10/27/3354893271842816/3453986024431616/STEM/8c84f04339b84d1c8c9433b868a9d020.png?resizew=507)
【基础巩固】
(1)求证:
;
【尝试应用】如图2,连结
,当
时,
(2)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074887bdd8da63f19f3e488ae2275d8b.png)
(3)求出此时
的比值:
【拓展提高】
(4)如图3,当
时,求出此时
的比值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f94944ab24466d1c45d69353cfedc9d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f46f19939f38833f9152942f8241b7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07fbad473c16df3ff62c1c6b37de6aa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60529c125b92797fa14c956878022340.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa74e4227c7395b7fdd772f0702916b4.png)
![](https://img.xkw.com/dksih/QBM/2023/10/27/3354893271842816/3453986024431616/STEM/8c84f04339b84d1c8c9433b868a9d020.png?resizew=507)
【基础巩固】
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a273597b608f7f08d4c14320014b8638.png)
【尝试应用】如图2,连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97cf714ffb3fd5917a76b191640b55fe.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074887bdd8da63f19f3e488ae2275d8b.png)
(3)求出此时
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/625000a942ec1b76a1176284be6d6520.png)
【拓展提高】
(4)如图3,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ac762a2899a58faa0d3ab44f1281fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/625000a942ec1b76a1176284be6d6520.png)
您最近一年使用:0次
3 . 如图,点M,N分别在正方形
的边
上,且
.把
绕点A顺时针旋转
得到
.
.
(2)若
,求正方形
的边长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8dbf16d3adcc74fbea454665bc66ca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4794cf7c57bdd4825d9e6615e2527a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eda61683bb1d4d62441f0625097b477.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/362af923b80962478deb74abb55b3e78.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b91e1e20baa416427b120fbee8100c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
4 . 如图1:在
中,
,
为
边上一点(不与点
重合),将线段
绕点A逆时针旋转
,得到线段
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/98eb0697-00f7-4e3e-9cf1-c49f55875e73.png?resizew=517)
(1)写出线段
之间满足的等量关系.
(2)如图2,在
中,
,
为
外一点,且
,线段
之间满足的等量关系又是如何的,请证明你的结论;
(3)如图3,已知
是
的直径,点
是
上的点,且
,
,
,求弦
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe3a63e76f530c20e363b3d2026144de.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/98eb0697-00f7-4e3e-9cf1-c49f55875e73.png?resizew=517)
(1)写出线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0d3055b122bf4953a3d6cc92ab03d74.png)
(2)如图2,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a22b02f6c8636152aeb62d191251e931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0d3055b122bf4953a3d6cc92ab03d74.png)
(3)如图3,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a22b02f6c8636152aeb62d191251e931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d71e6ea7333dbc78d0a7b9bc3892f940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
5 . 如图,
是正方形
边
上一个动点E(不与
重合),
是
延长线上一点,且
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/23032604-4b34-4c9f-8534-d9eca4f4889a.png?resizew=254)
(1)求证:
为等腰直角三角形.
(2)过点
作
的垂线,与直线
分别交于
两点,记
交
于点
.
①当
,求线段
的长.
②设
的面积记作
的面积记作
,用含
的代数式表示
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](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/ab609a6574633ebabcff3e73fa862081.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/f40b3bf6b27f936e0747de92151a1f77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc6c310fa3c3363a42fe869a70bcc080.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/23032604-4b34-4c9f-8534-d9eca4f4889a.png?resizew=254)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c877203215bd4cdc93dd0a6cb66f551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c0f067a2a348ceb24a408f82992eab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f4b6633012ced30ccd116228cb9696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dfaaf3f7fd61a9414973c00bc3bafe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d54a8424bf0ca8a6c23746b22f7e4be7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f944b0bbb4b208ab14d4cfd685ed723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
您最近一年使用:0次
6 . 如图,在
中,
,
,
,D、E为
边上两点(点D在点E的右侧),满足
.则
边上的高为______ ;设
,
.用含x的代数式表示![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce7f6d278f2ef7a193b7eed7be6b3c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1af32e267e35ef79bcb8df5d169283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2633a6f46b0847158eebb05c743561aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e83115ca0edf2fedb181bb960f3efde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/9033df6a-6919-4ae2-9236-bfa79cafe7f3.png?resizew=226)
您最近一年使用:0次
7 . 如图,边长为8的等边三角形
中,
是对称轴
上的一个动点,连接
,将线段
绕点
逆时针旋转
得到
,连接
,则在点
运动过程中,
的最小值是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/b8141b5d-d302-403e-b084-e4ac66b809c5.png?resizew=134)
您最近一年使用:0次
8 . 如图,
是等腰三角形,
,点
是底边
上一点,
交
于点
交
于点
,点
是
上一点,使
,连结
与
的延长线交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/6/5c7c0567-fccf-4cf6-a063-eaf50f6b1a9f.png?resizew=120)
(1)求证:
.
(2)若
,点
恰好是
的中点,求
的长.
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca14fa885a9d04f04e0418b49b118241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f43dab6ed7a5222080e209723c323560.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04a6d5762acd81a4a945301e2645c753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/6/5c7c0567-fccf-4cf6-a063-eaf50f6b1a9f.png?resizew=120)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6916c603a105551b619aa0d09b42985c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60634341a9603e24b2bbc6960abe3d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
您最近一年使用:0次
23-24九年级下·浙江·自主招生
9 . 如图,G为
的重心.
(1)当
时,求
的面积;
(2)当
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/12ddf712-612b-40fb-8134-f4bb4759981f.png?resizew=202)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aafa35b99e07b14527ca3a6bce4ba468.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23e87ef310c3988463873731ee021171.png)
您最近一年使用:0次
10 . 如图,O为半圆的圆心,C、D为半圆上的两点,连接
.连接
并延长,与
的延长线相交于点E.若
,半径
,则
的长为_____ ;
的长为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e86517e87fd34684781d2c7e4efb5e.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/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b42602dabcdc7bdaba0ee0af37d71f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/8bacef08-22c8-46a1-9abb-c03dce6a47bb.png?resizew=133)
您最近一年使用:0次