1 . 如图,在
中,
,垂足为D.如果
,那么
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ddb186d607fa9f4b096ece9bff8e2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209fb4e24900f25b2e163d3beed3ebd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be0bb9e49f8f8a2cd06311bbc45eaadd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-03-11更新
|
157次组卷
|
7卷引用:四川省宜宾市叙州区2022-2023学年九年级上学期期末数学试题
四川省宜宾市叙州区2022-2023学年九年级上学期期末数学试题四川省宜宾市叙州区叙州区龙文学校2023-2024学年九年级上学期12月月考数学试题(已下线)第02讲 解直角三角形(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学下册《知识解读·题型专练》(苏科版)(已下线)专题02 解直角三角形(六大类型)(题型专练)-2023-2024学年九年级数学下册《知识解读·题型专练》(浙教版)2024年河南省洛阳市偃师九年级一练模拟数学试题2024年河南省洛阳市偃师市中考数学一练模拟试题2024年湖南省新宁县水庙镇中心学校中考模拟数学试题
2 . 初识图形
(1)如图1,E、F分别为正方形
的
边和
边上的点,连接
、
,且
.则
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/eb0dbac1-6b60-459b-996e-58c19514e1c9.png?resizew=97)
(2)如图2,矩形
中,点E、F分别在边
、
上,连接
、
,且
,
,
,则
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/f15a1ff0-7ef2-4023-b4b1-9470e247a643.png?resizew=120)
类比探究
(3)如图3,
中,D、F分别为
、
边上的点,
,
,
,连接
,
交
于点E.求
长.请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/99fb2a3d-f8b5-4e69-9202-b25da3c07ac6.png?resizew=167)
拓展应用
(4)如图4,在矩形
中,E、F分别为
和
边上的一点,以
为折痕,将四边形
翻折,交
于P和Q,A和B的翻折后的位置分别是H和G.
,
,
,
.请直接写出折痕
的长.
(1)如图1,E、F分别为正方形
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61fe81d0b136fc2acc97ab50ffbf6edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8b82511bc8d7d9e419e58b909d4e730.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/eb0dbac1-6b60-459b-996e-58c19514e1c9.png?resizew=97)
(2)如图2,矩形
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8aed88ad640f3d76735f1e5dbc04b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3820f59016872ed88e551edc81cd8d42.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/f15a1ff0-7ef2-4023-b4b1-9470e247a643.png?resizew=120)
类比探究
(3)如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c24a968c73e960698a572ab01e3698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e39b13d187b25461d85a3b8d10c7b678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/99fb2a3d-f8b5-4e69-9202-b25da3c07ac6.png?resizew=167)
拓展应用
(4)如图4,在矩形
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d00be47dcb89793f14a2fd10f4c522b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95f5a1bc2d95dea3a21d2c5c8c9f39e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d7936e14ebc8e1b32d447e93a227c6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/897b160f090ad91f5d33f69376f7e8b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/f545de13-80ec-43b8-8c8b-3d810484bc73.png?resizew=130)
您最近一年使用:0次
2023九年级上·全国·专题练习
3 . 如图,在
中,
,高
,正方形
一边在
上,点
分别在
上,
交
于点
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b939af5ba06e279cce39396aaf0fae06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
您最近一年使用:0次
2024-03-11更新
|
194次组卷
|
9卷引用:山东省烟台市经开区2022-2023学年八年级下学期期末数学试题
山东省烟台市经开区2022-2023学年八年级下学期期末数学试题山东省烟台市烟台经济技术开发区2022-2023学年八年级下学期期末数学试题(已下线)第02讲 相似三角形的判定与性质(知识解读+真题演练+课后巩固)-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)第02讲 相似三角形的判定与性质(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学上册《知识解读·题型专练》(浙教版)(已下线)专题02 相似三角形的判定与性质(六大类型)(题型专练)-2023-2024学年九年级数学上册《知识解读·题型专练》(浙教版)(已下线)第03讲 相似三角形的性质(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学下册《知识解读·题型专练》(人教版)(已下线)专题03 相似三角形的性质(四大类型)(题型专练)-2023-2024学年九年级数学下册《知识解读·题型专练》(苏科版)(已下线)第03讲 相似三角形的性质(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学下册《知识解读·题型专练》(苏科版)(已下线)重难点06 相似三角形模型及其压轴类型(8大题型+满分技巧+限时分层检测)-2024年中考数学【热点·重点·难点】专练(广东专用)
4 . 如图,在△ABC中,点D,E,F分别在边
上,连接
,已知四边形
是平行四边形,
.若
的面积为1,求平行四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3bcd1354d120c42770572a3f5747241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc86286cc87af159866966208db78729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03e904f5b316b9ba89599fb789dd9b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dc9be501a12b1cc2893eed01fc9102a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03e904f5b316b9ba89599fb789dd9b09.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/b69b2ff3-380e-4e81-ab7e-34c1202c25a7.png?resizew=138)
您最近一年使用:0次
5 . 如图1,在
中,
,
,点P是
内一个动点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/6119a3fd-ce77-49d2-b5c0-b7487445ba78.png?resizew=487)
(1)试找出与
相等的角,并说明理由.
(2)如图2,连接
并延长交
的外接圆
于点Q,交
于点D,连接![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
①求证
;
②求
的最小值.
(3)在如图2的条件下,若
,求证:
![](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/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942a9a6bde4a5b9803b68b1e9065de62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/6119a3fd-ce77-49d2-b5c0-b7487445ba78.png?resizew=487)
(1)试找出与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172766b458ea1e95ab1f5cd70bab7463.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4234cf4d8159f5df0333bcc269ffe099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
①求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7d23d8614be566e6dd3a0c68ea15450.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dac9bf5ac3d89d6847a585bf318b3ba8.png)
(3)在如图2的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f6f95e7b64ef2c99935ca58e44df645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074b9214844a7c8a0bca3d97e8c7a244.png)
您最近一年使用:0次
6 . 如图,过菱形
的顶点D作直线,分别交
的延长线于点B,交
的延长线于点C.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/e7797b63-f17c-4943-89a4-f7b58344cd99.png?resizew=224)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f911bb45beb472681302b182f01a1f6d.png)
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a61d8bedef61745ee4fd89a8c0c119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/e7797b63-f17c-4943-89a4-f7b58344cd99.png?resizew=224)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f911bb45beb472681302b182f01a1f6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
您最近一年使用:0次
7 . 如图,
内接于
,
,它的外角
的平分线交
于点D,连接
,
,
交
于点F.若
,
,
,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/86a0be18-8e62-4627-9687-4efb66f01e83.png?resizew=178)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cf82e97595128f030504932bd738e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6344778ed1e75c1a99e2268468081867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3cd8fbcd9eb594adb8367795d444d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597ce705d3a2fe04d29de9e81ec6250d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93f9052064539cbdf04f5aba4a971f9a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/86a0be18-8e62-4627-9687-4efb66f01e83.png?resizew=178)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
8 . 如图,在矩形
中,
,点
在边
上,
于点
,若
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e0cdfb6d592897c6485ce1741677846.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/c672f693a7e75a7bae4936dcb1920430.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeedb5f361a1baff6338436fff6c471d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/7a3608a7-e933-4212-b768-9f2452dd0a65.png?resizew=168)
A.6 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
9 . 如图,在
中,
分别为
上的点
,
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/d181bd48-4e4a-4fcd-8721-6342b9351b6b.png?resizew=150)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3648c864f9f58da1dbb166fee84cfeaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa49835cb36d11ba406fa8cabbecd69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac1de4b839c9774f6f3ca27805638e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d649afbddd907f0dfec1420f02f82fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/d181bd48-4e4a-4fcd-8721-6342b9351b6b.png?resizew=150)
A.6 | B.5 | C.3 | D.2 |
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名校
10 . 如图,
是
的直径,点
在直径
上(
与
不重合),
且
,连接
,与
交于点
,在
上取一点
,使
与
相切.
;
(2)若
是
的中点,
,求
的长.
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df4a2a127d89d50d3fde881a9b58ef0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fa1b5b6051d500fe6c6f1c19c7ee49f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
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2024-03-08更新
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9卷引用:山东省菏泽市曹县2022-2023学年九年级上学期期末数学试题
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