1 . 在下列条件:①
;②
;③
;④
中,不能确定
为直角三角形的条件有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/791e819abbe4ecc6f2e7209839c4fc0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf8367832fe4afe83c3764701b04c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d0ae4308829234984c690f092a74e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae0f2a325bf0726f7552166f52ac60fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.4个 | B.3个 | C.2个 | D.1个 |
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2024-03-03更新
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3卷引用:四川省成都市武侯区武侯区西川实验学校2022-2023学年七年级下学期期中数学试题
2 . 如图,
中,
,
,
,则
等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3393b3590c1b09bca24ee67cfb592315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d8d9a8fc8cc7852df70b3f1a7c80138.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105068b25f5a63af32f4082cfe08691e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3e081637bcea5368cc72370bae283b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/0e7eb762-d591-4b84-869f-198585f6b792.png?resizew=156)
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2024-03-02更新
|
55次组卷
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2卷引用:四川省成都市金牛区2023-2024学年八年级上学期期末数学试题
3 . 如图,在
中,
,
.点
在
边上(不与点
,
重合),连接
,过点
作
的垂线交过点
且垂直于
的直线于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/cdbc3968-ba16-47a4-8393-716b6870fdf9.jpg?resizew=192)
(1)求证:
;
(2)试探索线段
,
,
之间有何数量关系?写出你结论,并证明;
(3)若点
在
的延长线上,那么线段
,
,
之间又有何数量关系?请直接写出你结论,不用证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/cdbc3968-ba16-47a4-8393-716b6870fdf9.jpg?resizew=192)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4253b380bfabd7dbde874b3e9cafb76.png)
(2)试探索线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
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2卷引用:四川省成都市成华区2023-2024学年八年级上学期期末数学试题
名校
4 . 如图,在
中,
,
的垂直平分线交
,
于点D,E,连接
,则下列结论错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4354365ca0929f8a606ed0bf341e4ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2024-02-26更新
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38次组卷
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2卷引用:四川省成都市武侯区成都市玉林中学2023-2024学年八年级下学期期中数学试题
5 . 如图1,已知
,点D在BC上,且
,
,AC与DE相交于点F,连接CE.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/6e5292b3-25dc-4d3d-8db3-9847ccd3a64f.png?resizew=295)
(1)求∠DCE的度数(用含
的代数式表示);
(2)求证:
;
(3)如图2,若
,判断△ADF的形状,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28b2c767972aa7c8ca26d50d33bc001b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d212c1709b8e72a055cf1b5381ef64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/6e5292b3-25dc-4d3d-8db3-9847ccd3a64f.png?resizew=295)
(1)求∠DCE的度数(用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce303692c996c0cdb9baaab9fb7bd84c.png)
(3)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edffb236f765898461297ad7b854bd69.png)
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6 . 如图,将含有
的直角三角尺
(
)直角顶点A放到矩形
的边
上,若
,则
的度数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/99963de5-df76-4264-bd31-558d55aed6dd.png?resizew=233)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105f1100148bbf6d789b9048281755a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/998329f9cdb86f5d60d7d5d70fc3781e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87f7af65de9d8827ee2d0004c1cd739d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb34acf4ee03bf3f3801ab644a0e209.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88d5dab4dca52b19da55fdbd84c07405.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/99963de5-df76-4264-bd31-558d55aed6dd.png?resizew=233)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
7 . 如图,中,半径
,点C在劣弧
上.若
,则
( )
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-02-20更新
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4卷引用:四川省成都市温江区2023-2024学年九年级上学期期末数学试题
8 . 如图1,在
中,
,
,点
为
内部一点,
,连接
,将
绕点
逆时针旋转
得到
,连接
交
于点
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/ccbc4ea0-1773-4e17-9f6b-608d02cee8f8.png?resizew=415)
(1)求证:
;
(2)如图2,当点
落在
上时,求
的度数;
(3)如图3,若
为
的中点,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.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/9fc13fe21e64d9b45614ed43be847904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.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/5d7080f104e9e5d23a2858c605cdb6dc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/ccbc4ea0-1773-4e17-9f6b-608d02cee8f8.png?resizew=415)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e9be98db08d441da6bf0e061f7c9c5.png)
(2)如图2,当点
![](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/685516a27697104e83b311d76efa17aa.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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名校
9 . 如图所示,已知直线
,则
的度数为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb2dc3c181594a1978cdd683c5006512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/605f2976297a0deaa1602ef09d6a5afa.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-02-19更新
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114次组卷
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5卷引用:四川省成都市金牛区2023-2024学年八年级上学期期末数学试题
名校
10 . 如图,直线
,
,
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d3783ed9a7d67f4a30bd76d369555d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0e8f35e8fff37c26b396c5a3dfdea4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7卷引用:四川省成都市成华区2023-2024学年八年级上学期期末数学试题
四川省成都市成华区2023-2024学年八年级上学期期末数学试题四川省成都市成华区2023-2024学年八年级上学期期末考试数学试题陕西省西安市长安区航天城第二中学2023-2024学年九年级下学期月考数学试题2024年重庆市中考备考模拟数学模拟试题(一)重庆市北碚区西南大学附属中学校2023-2024学年九年级下学期3月月考数学试题重庆市长寿区长寿川维中学校2023-2024学年九年级下学期期中数学试题(已下线)专题01 平行线相关问题专练(7题型)【好题汇编】-备战2023-2024学年七年级数学下学期期末真题分类汇编(浙江专用)