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1 . 根据所给条件不能判定是直角三角形的是( )
A.三边为![]() | B.三边之比为![]() |
C.![]() | D.三角形一边上的中线等于这一边的一半 |
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2 . 如图所示,在
中,
分别垂直平分
和
,交
于
.
,求
的度数;
(2)若
的周长为
,求
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78b842a25ab063a07203a5d0a1af1ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/018fb1bfa58c028322889b7806f5a989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab91e965dbd7fec04447b7eebd44e87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d062e2fd70631fac39b0fd23963dfbab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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3 . 如图,
中,
,将
绕点C顺时针旋转
得对应
,连接
,则
的大小为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eb25819587ec72d4b6370e70cd94103.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2689f0ce5ab3467d8214794d8acb2bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3de20ba8bda63c650ef571be155702.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-04-07更新
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352次组卷
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2卷引用:2024年四川省南充市九年级第一次诊断性考试数学模拟试题
4 . 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)
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2024-04-01更新
|
160次组卷
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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)
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5 . 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
6 . 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)
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7 . 如图,已知
为等边三角形,D,E分别是边
上一点,
与
相交于点
,点
是射线
上一点,且
,
与
相交于点
.
(1)求
的度数;
(2)求证:
是
的中点;
(3)若
,
,求
的边长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cca04b2a2b61d62a809776670a60c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a693d58a3baf5472af855cb4e2f7af6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/26/6fb5dc61-a270-4f7c-84d4-01950e68555a.png?resizew=471)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13a2e6494cf8d2dff0746a9bb72cef43.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb3d1070981fed5ca65a34bb2282e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495be6a6b940e8affe38f2bcdee246b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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8 . 如图,在
中,
,点
在
的垂直平分线上,将
沿
翻折后,使点
落在点
处,线段
与
相交于点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a2e32ce2eb3cb59783534a267fc5be6.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53411c19d804ca7844d719b2fca2659f.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/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cdc08e1c4a04a18d5ecea03393e36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a2e32ce2eb3cb59783534a267fc5be6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/4d31aeed-7276-4b0f-9d8b-1bcd1f9bb843.png?resizew=171)
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2024-03-25更新
|
181次组卷
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3卷引用:四川省绵阳市2023-2024学年八年级上学期期末数学试题
名校
9 . 如图,在
中,
,分别以点A和点C为圆心,大于
的长为半径画弧,两弧相交于点M,N,作直线
,交
于点D,连接
,则
的度数为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70db7433d5c04be6e69df2e371965b78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c93148adbc6e856da9a9d263f485d003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.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/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
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2024-03-21更新
|
117次组卷
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3卷引用:四川省成都市成都市第七中学初中学校2023-2024学年八年级下学期期中数学试题
四川省成都市成都市第七中学初中学校2023-2024学年八年级下学期期中数学试题2024年江苏省淮安市盱眙县第一中学九年级中考数学模拟3(已下线)专题08 几何作图问题2-2024年中考数学二轮热点题型归纳与变式演练(江苏专用)
10 . 在
中,
,过点B作
交直线
于D,延长
至E,使
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/5346e1d7-bf32-49d5-866c-72909d90c87a.png?resizew=276)
(1)如图1,若
,求
的度数;
(2)若
,试探究
与
的数量关系并说明理由;
(3)如图2,若
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b77c8ef75793d21d2d5d8bf470a61159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70734a8e672376bb0bd1522e229f86a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4e92f48e9bfe12d145f7d2a2f0360d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/580a93c380d919150e893b85e934e809.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/5346e1d7-bf32-49d5-866c-72909d90c87a.png?resizew=276)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a858e3fda1505e5aede22f4d6edd3f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35803969509655f72b4118503ae1c966.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5306ee783ec381da6c03d4fb7ecb4395.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35803969509655f72b4118503ae1c966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76bc8e50eeccced1d7f3bc52e09a7d03.png)
(3)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42b730d87bb95763a48c69f1b0329ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af633abfe3cb03f1836db6c570a5bcc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
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