1 . 如图,在四边形
中,
,
,
平分
,
,
的延长线交
于点
.求证:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/18/4777082c-27d2-4abf-b28c-404975d21e77.png?resizew=179)
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dceb5cc71fc50f20649f6b9535fd914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4009aa13093cc3865dcd51b371892160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/100b3e7dcd5f34c5234971cd75bff138.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/18/4777082c-27d2-4abf-b28c-404975d21e77.png?resizew=179)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2804f068047283e994461d95ed7ca45.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/256f76b60f5040b1f238bb4184f6396e.png)
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2 . 如图,
都是等边三角形,
交于
,则
的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/18/b6f44015-f529-43a6-b1bd-56a3a65d3442.png?resizew=169)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7a36707486b956ce26688bfae7dfe72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b75e2eaf6394f3b07703e4176541b7f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77282d5b97a60264cf15fb74b48e4b59.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/18/b6f44015-f529-43a6-b1bd-56a3a65d3442.png?resizew=169)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 如图,
平分
,
,则图中的全等三角形有________ 对.
![](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/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/28/b5ad7418-d616-4c72-8905-35b380e8dbf7.png?resizew=185)
您最近一年使用:0次
4 . 下列不能够判定两个直角三角形全等的条件是( )
A.有两条直角边对应相等 | B.有一条斜边和一个锐角对应相等 |
C.有一条直角边和一条斜边对应相等 | D.有两个锐角对应相等 |
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2023-04-05更新
|
242次组卷
|
5卷引用:山东省临沂市平邑县蒙阳新星学校2022-2023学年八年级上学期3月月考数学试题
山东省临沂市平邑县蒙阳新星学校2022-2023学年八年级上学期3月月考数学试题(已下线)第07讲 AAS,HL证全等及角平分线的性质-【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12.10 全等三角形的判定(HL)(知识梳理与考点分类讲解)-2023-2024学年八年级数学上册基础知识专项突破讲与练(人教版)(已下线)专题1.10 探索三角形全等的条件(HL)(知识梳理与考点分类讲解)-2023-2024学年八年级数学上册基础知识专项突破讲与练(苏科版)山东省临沂市兰山区临沂第六中学2023-2024学年八年级上学期10月月考数学试题
5 . 命题“两边分别相等且其中一组等边的对角相等的两个三角形全等”是_________ 命题(填“真”或“假”).
您最近一年使用:0次
22-23八年级上·全国·课后作业
6 . 如图,已知
,
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb9fa847f893bc238c97ee4e916e5368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/424269ceef173843aae76e39ecdf6111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c244edbf77fbb8e9c017515e370c5c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a510a3eb906b3ef0760b0d1723d11ae.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/20/8f00ba8e-b868-47d4-af94-d586133aca55.png?resizew=149)
您最近一年使用:0次
2023-03-16更新
|
1067次组卷
|
4卷引用:【浙教版课时练习】八年级上册1.4 全等三角形
(已下线)【浙教版课时练习】八年级上册1.4 全等三角形山东省济宁市任城区实验初中2022-2023学年八年级上学期期末数学试题广东省佛山市南海实验中学2022-2023学年七年级下学期数学期中试题山东省德州禹城市某校2023-2024学年八年级上学期10月月考数学试题
22-23八年级上·全国·课后作业
名校
7 . 如图,若已知
,用“
”说明
,还需要的一个条件是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/20/2ff85aaf-750a-4821-bfb3-7453edcfd6e8.png?resizew=184)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934a9508c176f44bf58f88715bd98f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5a290f047f50481318d040c604d72f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f03a43549ab71f0998fffbcb48397b00.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/20/2ff85aaf-750a-4821-bfb3-7453edcfd6e8.png?resizew=184)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-03-16更新
|
501次组卷
|
4卷引用:【浙教版课时练习】八年级上册1.4 全等三角形
(已下线)【浙教版课时练习】八年级上册1.4 全等三角形山东省济宁市任城区实验初中2022-2023学年八年级上学期期末数学试题湖北省恩施州利川市三校联考2023-2024学年八年级上学期期中数学试题福建省福州市第十六中学2023-2024学年八年级上学期期中数学试题
8 . 在
中,
,点D是直线
上一点(不与B、C重合),以
为一边在
的右侧作
,使
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/20/b8e2ef1c-2586-4212-bb70-6b605445f9cb.png?resizew=330)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9e37e71ced105f26fa0c91b00cdcfa1.png)
(2)当四边形
的周长取最小值时,求
的长.
(3)若
,当点D在射线
上移动,则
和
之间有怎样的数量关系?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecfec74b97e257cc0e1220029ad19b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/490070bb26d776286b92efa889ac9205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/20/b8e2ef1c-2586-4212-bb70-6b605445f9cb.png?resizew=330)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9e37e71ced105f26fa0c91b00cdcfa1.png)
(2)当四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bc1cbcd6d00f0c36bad8254297d9f33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abdbb06b06e98b0b0b7528b144d41875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db866ecc0c098bfc32ec8a43b65bdd58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
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9 . 如图,点
在同一条直线上,
,要使
,需要增加的一个条件是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/18/5546f87e-ea71-4624-8f43-d6e810207715.png?resizew=103)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071081b9a1b64f65c6b74e5f96a786eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d94a10206eb5a6aca5ed0a31ac9896c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac61f3477e623aa4f924a82bd7a06ce4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/18/5546f87e-ea71-4624-8f43-d6e810207715.png?resizew=103)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 如图,将一根长为30 cm的橡皮筋固定在笔直的木棒上,两端点分别记为A,B,然后将中点C向上竖直拉升8 cm至点D处,则拉伸后橡皮筋的长为________ cm.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/67fbb791-8b78-42d9-8227-c3ddb340ea01.png?resizew=218)
您最近一年使用:0次