1 . 如图,在平行四边形
,
,F是
的中点,作
,垂足E在线段
上,连接
,则下列结论:①
;②
;③
;④
,一定成立的是______ .(把所有正确结论的序号都填在横线上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b929269c53a44907dba8ee298a0a522.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f913298f0fae9f55377a8deab9f099dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6eab9a800ed1794b16f38ab3b1a285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79565204afa03faf95c0ab4357da11d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34323137ddb894a70d97511aa5fe6f98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7473f383178461f47c812f381a41622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd557698d92a5298af2c86acc0b5d80.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/20/832fd22a-515a-478e-82f8-ddcf2052a27c.png?resizew=212)
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名校
2 . 如图,点A,B,C在同一条直线上,点B在点A,C之间,点D,E在直线
同侧,
,
,
,连接
.设
,
,
,给出下面三个结论:①
,②
,③
.上述结论中,所有正确结论的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09a9a6f020159406608000cf93d4fa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/853e81b1b9606ad25244ff82c8292df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f925f45b71f457f3fa19203360a287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42e97eee705d164e6ac6de9ecd6d1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a88b719166fcc1431f876bc8c5656c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fd764314ae7afde76f32918f79ccc84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf538440bd45e5881f2b22994560ba7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df337f2eff7f81da8cf7d52ba803d006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a69312f3a714cde39e4cf0911344ace.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/10/f1a14449-7798-496f-9520-0cb9f9d995aa.png?resizew=152)
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2023-09-10更新
|
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3卷引用:北京市海淀区北京市师达中学2023-2024学年九年级上学期开学考试数学试题
3 . 如图,将
绕点
顺时针旋转
得到
,边
,
相交于点
,连接
.下列结论:①
;②
平分
;③
;④
.其中所有正确结论的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2689f0ce5ab3467d8214794d8acb2bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce74654b7088989396bb03fb619b0428.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd94dd51562ecbee6edd4265326b765.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5588b9238d940f09fd25191b930ce936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/817ccf96200350828be4a7a503a5ad02.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/3e787b10-14f4-45be-b889-77c046a064f7.png?resizew=229)
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2022-12-09更新
|
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4卷引用:福建省福州市第十五中学2023-2024学年九年级上学期月考数学试题
福建省福州市第十五中学2023-2024学年九年级上学期月考数学试题 福建省福州市长乐区2022-2023学年九年级上学期期中数学试卷(已下线)专题23.13 旋转(全章分层练习)(提升练)-2023-2024学年九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3.6 图形的旋转(分层练习)(基础练)-2023-2024学年八年级数学下册基础知识专项突破讲与练(北师大版)
4 . 如图,在
中,
,
,射线
是
的平分线,交
于点
,过点
作
的垂线与射线
交于点
,连接
,
是
的中点,连接
并延长与
的延长线交于点
,则下列结论:①
;②
垂直平分
;③
,④
;把所有正确结论序号填在横线上______ .
![](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/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f7e12216b01699b2805d03ebceb33c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e26894dd6c092722e47ea3ffc14283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358b8f66f7cc58907fedb8922d5fa80b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/3/be3adb54-0218-4ebf-888a-aedc1b1f0a90.png?resizew=167)
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2023-03-02更新
|
85次组卷
|
2卷引用:江西省南昌市雷式学校2023-2024学年八年级上学期月考数学试题
5 . 如图,点A、B、C在一条直线上,
和
均为正三角形,
分别与
交于点M、N,有如下结论:①
;②
;③
;④
;⑤
与
所夹锐角为60°.其中正确的有______________ (填上正确结论的序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/644f63756fe9251e65cc14e1ce9723d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6818a98204f62c1b16699d26ca0c3f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a15b8f09bf73e7d0d82d9af1a6f6dfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a1f908b267576344b0067285584762d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71c67dae7c83183ffbf215c58ed1def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5df3be4e18c4662478953781e1a6199.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bec55dff70fe8916e7de30db9b3508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73cbd27d06065f2ddd5cf5ccbe5bef48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/44e20656-d95c-46cc-b06b-88bc98ab8081.png?resizew=161)
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6 . 如图,AB
CD,将一副直角三角板作如下摆放,∠GEF=60°,∠MNP=45°.下列结论:①GE
MP;②∠EFN=135°;③∠BEF=75°;④∠AEG=∠PMN.其中正确的结论有_____ (写出所有正确结论的序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/7f21b5b5-85cb-4604-87a1-fd3d3fe60810.png?resizew=130)
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2022-08-16更新
|
525次组卷
|
4卷引用:河北省廊坊市固安县第五中学2023-2024学年八年级上学期第一次月考数学试题
河北省廊坊市固安县第五中学2023-2024学年八年级上学期第一次月考数学试题山东省临沂市临沭县2021-2022学年七年级下学期期中数学试题(已下线)综合复习与测试(3)(第十一十二章)(培优篇)(专项练习)-2022-2023学年八年级数学上册基础知识专项讲练(人教版)上海市民办尚德实验学校2022-2023学年七年级下学期期中数学试题
名校
7 . 数学概念:如图①,在△ABC中,D为∠ABC的对边AC上一点(点D不与点A、C重合),连接BD.若∠ADB和∠CDB这两个角中至少存在1个与∠ABC相等,则称BD为△ABC中∠ABC的等角分割线.
![](https://img.xkw.com/dksih/QBM/2022/3/18/2938909935804416/2941001725878272/STEM/70c78f2ff538489e8f3e9874cf1e1362.png?resizew=268)
(1)概念理解:如图②,在Rt△ABC中,∠C=90°,∠B=60°.分别画出∠B和∠C的等角分割线BD、CE.(画图工具不限,并做出适当的标注)
(2)知识运用:在△ABC中,∠A=45°,∠ACB=75°.已知∠ABC、∠ACB的等角分割线BD、CE相交于点O,求∠BOC的度数.
(3)深入思考:下列关于“等角分割线”的结论:
①钝角三角形中的钝角有2条等角分割线;
②任意一个三角形中最少有1条等角分割线,最多有3条等角分割线.
③三角形的高、角平分线可能是该三角形中的等角分割线;
④三个角都不相等的三角形中,最小的角没有等角分割线;
其中所有正确结论的序号是 .
![](https://img.xkw.com/dksih/QBM/2022/3/18/2938909935804416/2941001725878272/STEM/70c78f2ff538489e8f3e9874cf1e1362.png?resizew=268)
(1)概念理解:如图②,在Rt△ABC中,∠C=90°,∠B=60°.分别画出∠B和∠C的等角分割线BD、CE.(画图工具不限,并做出适当的标注)
(2)知识运用:在△ABC中,∠A=45°,∠ACB=75°.已知∠ABC、∠ACB的等角分割线BD、CE相交于点O,求∠BOC的度数.
(3)深入思考:下列关于“等角分割线”的结论:
①钝角三角形中的钝角有2条等角分割线;
②任意一个三角形中最少有1条等角分割线,最多有3条等角分割线.
③三角形的高、角平分线可能是该三角形中的等角分割线;
④三个角都不相等的三角形中,最小的角没有等角分割线;
其中所有正确结论的序号是 .
您最近一年使用:0次
8 . 如图,锐角三角形
中,点D在
上,
.甲、乙二人想在
上找一点P,使得
,做法分别如下.对于甲、乙二人的做法,下列判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ac5e13622afab5e9f8603afe42356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a2906712896678ab53d2e5df18535ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/078c13354d27e9ed4131792a8e43454c.png)
甲的做法![]() 作 ![]() ![]() | 乙的做法![]() 以点C为圆心, ![]() ![]() |
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/19/dd7c4d23-64a8-4fdb-b3b2-412878dfc9d2.png?resizew=134)
A.甲、乙皆正确 | B.甲、乙皆错误 | C.甲正确,乙错误 | D.甲错误,乙正确 |
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9 . 如图,直角三角形
中,
,
于点
,
平分
交
于点
,交
于点
,
交
于点
,
于
,以下4个结论:①
;②
是等边三角形;③
;④
中正确的是______ (将正确结论的序号填空)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b28f28ced0531d1df34fcf04c6c67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac4e5834821241bf9752e7986e0defa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53bb5ccceb997622add983ee2dc68522.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd6fe78f6cfdfefd6d8be45473b25b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6353eb2fa2d6c651f6fd3b44def1c876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb29dc024f8f554eaa879bac345aeb92.png)
![](https://img.xkw.com/dksih/QBM/2021/1/28/2645738145316864/2652445308420096/STEM/fd20b001-cd75-48f5-8f66-7acdf55628d3.png)
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|
986次组卷
|
6卷引用:湖北省咸宁市2020-2021学年八年级下学期4月教学质量监测数学试题
湖北省咸宁市2020-2021学年八年级下学期4月教学质量监测数学试题天津市东丽区英华学校2022-2023学年八年级下学期第一次月考数学试卷山东省滨州市惠民县2020-2021学年八年级上学期期末数学试题(已下线)专题4.6平行四边形【压轴题型专项训练】-2020-2021学年八年级数学下学期期末专项复习(北师大版)福建省龙岩市上杭县城区三校2021-2022学年八年级下学期期中检测数学试题广东省广州市海珠区南武集团2022--2023学年八年级下学期期中数学试题
10 . 如图,在
中,
,在
的外部和内部(不在边上)分别取一点
,
,若
,
,
,
的补角等于
,
则下列结论:
①点
在线段
的垂直平分线上;②
;
③
;④
的最大值是14.
其中正确的结论是_________ .(填写所有正确结论的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fffa3d9c32da53b0ea0c338012ea20c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffdfaf8ba10c7a0250437f4a317c5f44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d71e6ea7333dbc78d0a7b9bc3892f940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0761165f1176f3a5fe4f7b052832316d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5157b42da58d55daad27d98b2fec15ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35803969509655f72b4118503ae1c966.png)
则下列结论:
①点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdb6e71754d3e73fb4939ee00f24ab9c.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27beebe45dba8f91743aab21f15b39b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
其中正确的结论是
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/24/b1e882c9-5def-44a5-aa68-d1d03275c01b.png?resizew=238)
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