1 . 等腰三角形的一个内角为
,则它的底角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85e283d58ea8a48989988ce61df58688.png)
A.![]() | B.![]() | C.![]() ![]() | D.不能确定 |
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2024-03-04更新
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4卷引用:四川省达州市通川区达州铁路中学2022-2023学年七年级下学期期末数学试题
四川省达州市通川区达州铁路中学2022-2023学年七年级下学期期末数学试题广东省茂名市高州市四校联考2023-2024学年八年级下学期月考数学试题(已下线)专题01+等腰三角形与直角三角形01(9大题型+优选提升题)-备战2023-2024学年八年级数学下学期期末真题分类汇编(北师大版)陕西省西安市西安国际港务区铁一中陆港初级中学2023-2024学年七年级下学期第二次月考数学试题
2 . 如图所示,在
和
中,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/e80525f3-f281-4429-aceb-728303243c1a.png?resizew=160)
(1)求证:
;
(2)若
的延长线交
于点
,交
于点
,
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6e90ccd9d4588750c5f7d8a2a66732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ddd49625097d0a78df7170be4f882e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/e80525f3-f281-4429-aceb-728303243c1a.png?resizew=160)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f03a43549ab71f0998fffbcb48397b00.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4cbbb8e8c10a9936a93ebe5954e141d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10911c26e29760a7425ba305f4c86963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
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3 . 如图,在等腰
中,
,点
是线段
上一点,过点
作
交
于点
,且
,
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/51566a83-f25e-4c0e-9b93-7f7fd8d752ef.png?resizew=158)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c0aa4c793921fdaa5d430cb90d78ca6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba11242dcc61d3c7c3555b598b5fdc89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27bb421b8fb47716b09ea7367a8a6a42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9b5c0e0724cce5c25a88dca5e9220c2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/51566a83-f25e-4c0e-9b93-7f7fd8d752ef.png?resizew=158)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
4 . 满足下列条件时,
不是直角三角形的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2024-03-03更新
|
322次组卷
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9卷引用:四川省成都市青羊区泡桐树中学2023-2024学年八年级上学期期末数学试题
四川省成都市青羊区泡桐树中学2023-2024学年八年级上学期期末数学试题山东省德州市宁津县大曹镇大赵中学2023-2024学年八年级下学期第一次月考数学试题山东省宁津县大赵中学2023-2024学年八年级下学期第一次月考数学试题内蒙古自治区通辽市霍林郭勒市第五中学2023-2024学年八年级下学期3月月考数学试题安徽省安庆市怀宁县2023-2024学年八年级下学期期中数学试题广东省广州市执信中学2023-2024学年八年级下学期期中数学试题黑龙江省绥化市绥棱县第六中学2023-2024学年八年级下学期第二次月考数学试题(已下线)专题02 勾股定理与勾股定理逆定理之九大题型-备战2023-2024学年八年级数学下学期期末真题分类汇编(人教版)(已下线)第1章 三角形的证明易错(11个考点50题专练)-2023-2024学年八年级数学下学期考试满分全攻略高频考点+重难点讲练与测试(北师大版)
5 . 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
|
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
6 . 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)
您最近一年使用:0次
2024-03-01更新
|
116次组卷
|
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
7 . 等腰三角形的一个角为
,则它的顶角为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36581140ebac5d28438ea63b1b23b65.png)
您最近一年使用:0次
2024-02-29更新
|
65次组卷
|
3卷引用:四川省凉山彝族自治州2023-2024学年八年级上学期期末数学试题
四川省凉山彝族自治州2023-2024学年八年级上学期期末数学试题江苏省南京市浦口区南京明道学校 2023-2024学年八年级上学期10月月考数学试题(已下线)北师大版七年级期末真题必刷常考60题(60个考点专练)-2023-2024学年七年级数学下学期考试满分全攻略高频考点+重难点讲练与测试(北师大版)
8 . 如图,
在
边上,
,
,则
的度数为( )
![](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/f03a43549ab71f0998fffbcb48397b00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1df9f0b80d85d8e6ac7b1cc052d054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23dc2d2dd56fcc67698c45a6e0e48f80.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/e813439a-36e0-4dca-acb5-c473009f2176.png?resizew=178)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
9 . 一副三角板按如图所示的位置放置,过点A 作直线
,
平分
,
、
交于点F.已知
,
,
,
.下列结论正确的是_______ .
①
;②
平分
;③
;④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/701bb29066082e9ac114377cb1a4678e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/781026dac62b5373596f56360bf573a6.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/2d4d00b86b2f067b902baf6e52f0faab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/931b1589d78dd81a3ecac7b9664b3307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81e24376a13d648c2ed0dc73bc710e.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70ab6b4866ff2e3fcde1ab6a59b8ea7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbd1aaae1a60dad163311e2393c2637.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e134c7ceaf45ae447b018f75a6220cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105fe3c615101eb3be6903fdcf4401e9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/24baa80d-0cb0-441a-9176-a1c98f51c53c.png?resizew=188)
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10 . 轮船在
处观测到灯塔
位于南偏东
方向上,轮船从
处沿南偏东
方向航行
至
处,在
处观测灯塔
位于北偏东
方向上.(按图上
代表实际距离
作图)
(1)根据题意作出图形,确定
、
、
的位置;
(2)根据作图,量出
、
两地之间的实际距离为
;
(3)求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a4c9b697e3df2b5469b71d3b5e47a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f971d44effe601c7244f7bcde43b863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048b61a5fb5f420c6d7de88db5bc3aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3fb33e7fb8709bd8d5db686644d50b.png)
(1)根据题意作出图形,确定
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)根据作图,量出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5fe30c67ac20cd4e8b9cc2d0d420a7b.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
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