1 . 如图,在
中,
的垂直平分线
交
于点E,交
于点F,D为线段
的中点,
.
.
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7595bdaea3dfa548c0fcfe3708387476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3f8cb648966fd4ff28896fe8f9e04d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
您最近一年使用:0次
2024-04-01更新
|
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|
5卷引用:四川省成都市锦江区石室天府中学2023-2024学年八年级下学期4月月考数学试题
四川省成都市锦江区石室天府中学2023-2024学年八年级下学期4月月考数学试题广东省深圳市宝安区冠华育才学校2023-2024学年八年级下学期第一次月考数学试题安徽省宿州市萧县城北初级中学2023-2024学年八年级下学期月考数学试题(已下线)第五章第03讲 简单的轴对称图形——垂直平分线和角平分线(7类热点题型讲练)-【帮课堂】2023-2024学年七年级数学下册同步学与练(北师大版)(已下线)第1章 三角形的证明 全章热门考点专练(3个概念6个性质4个判定4个技巧1个应用)(原卷版)
名校
2 . 满足下列条件的三角形中,不能判断三角形为直角三角形的是( )
A.三角形三边长为7,24,25 | B.三角形的三内角度数之比为![]() |
C.在![]() ![]() | D.三角形的三边之比为![]() |
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2024-03-31更新
|
87次组卷
|
4卷引用:四川省德阳市中江县2023-2024学年八年级下学期3月月考数学试题
3 . 如图,在
中,
,点D在
上,点G在
上,把
沿直线
翻折得到
,
与
交于点E,若
,
,则
的度数是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.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/6d11746005a0e806f2d27f89e3d9e9c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7afc55b4911a1fa183fb4612c6462d95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b3f839ce88bf970aceb44ab939bd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8a5b476e7bc3345e2a91f31aae372d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/864d1053db2af0fdccde0e5d8385eed4.png)
您最近一年使用:0次
4 . 如图所示,在 中,已知
是角平分线,
,
.
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23dc2d2dd56fcc67698c45a6e0e48f80.png)
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5 . 已知:如图,点A、B、C、D在一条直线上,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/16/0eee654b-d2e6-478f-892a-6b4d0bd4d70f.png?resizew=186)
(1)求证:
;
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c256e15ef9525d1db0352ff2bc985afb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79c4e16cf8823342b3d85aad20b2301.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/16/0eee654b-d2e6-478f-892a-6b4d0bd4d70f.png?resizew=186)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8e290ca69736db986d2af2bf7f4b886.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f73d0830d11e85dcaa376884ad46dc06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b871a762469393cdd22f15aa49ebb8f9.png)
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6 . (1)等腰三角形一腰上的中线将它的周长分为
和
两部分,求等腰三角形的各边长.
(2)等腰三角形一底角的角平分线与另一腰形成的锐角为
,求等腰三角形各底角度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdaf250913cd8d5bd10245da1c496bb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa87e5b49076f307a135bb2f63fa61d.png)
(2)等腰三角形一底角的角平分线与另一腰形成的锐角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c5b696c0ca68ec19b9127c1675051f8.png)
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7 . 如图,在四边形
中,
,
平分
交
于点E,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/a8fccfd6-b1e5-489c-bd28-d37da1967933.png?resizew=117)
(1)若
,求证:
.
(2)若
,
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/387a4b5077b3e2b86449fc3d9d77b335.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/a8fccfd6-b1e5-489c-bd28-d37da1967933.png?resizew=117)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13d56d020ccb6a598187f81e987ab6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07b8f53d5fb93efe2609e0936dd38bd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deece9a4d9301fb6028aa1f81a11c23b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e418c4354d6c8e172685b9829141e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/936f5f26aac7197d42a41081fb1fda0e.png)
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8 . 三角形满足下列条件,不能判断它是直角三角形的是()
A.三个内角度数之比为![]() | B.三边之比为![]() |
C.一个内角等于另外两个内角之差 | D.三边长分别为![]() ![]() |
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2024-03-14更新
|
213次组卷
|
2卷引用:四川省德阳市中江县2021-2022学年八年级下学期4月考试数学试题
9 . 如图,在
中,
,
,以点B为圆心,适当长为半径画弧,
于点M,N,再分别以点M,大于
的长为半径画弧,射线
交
于点D,则线段
的长度是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/670f52f3-3905-41a5-b040-a37a77de3379.png?resizew=123)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/758fdccdfcf7dde4c51b5280bd802bef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e9ef3e849788645552cfb0735d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94e1ca12da27075e5241b7c7ce74672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/670f52f3-3905-41a5-b040-a37a77de3379.png?resizew=123)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
10 . 能判断
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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2024-03-13更新
|
257次组卷
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4卷引用:四川省德阳市德阳市第二中学校2023-2024学年八年级下学期4月月考数学试题
四川省德阳市德阳市第二中学校2023-2024学年八年级下学期4月月考数学试题四川省成都市武侯区成都西川中学2023-2024学年八年级上学期期末数学试题河南省漯河市郾城区郾城区第二初级实验中学2023-2024学年八年级下学期3月月考数学试题(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)