1 . 如图,△ABC中,AC=BC,∠C=90°,AD平分∠BAC,DE⊥AB于E,现给出以下结论:①AD平分∠CDE;②DE平分∠ADB;③∠BAC=∠BDE;④AC+BE=AB.其中正确的是________ .(写出所有正确结论的序号)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/a25d597c-2890-4d4e-973a-52c048dccea0.png?resizew=156)
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2022-06-23更新
|
223次组卷
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2卷引用:福建省三明市2021-2022学年七年级下学期期末数学试题
2 . 如图,在
中,
,将
绕点
顺时针旋转得到
点
的对应点为
,点
的对应点
落在线段
上,连接BE.下列结论:①
平分
;②
;③
;④
.其中所有正确结论的序号是______ .
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cda6381d959e6f99f3100d7137c45c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23dc2d2dd56fcc67698c45a6e0e48f80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b61fe2791ff441916982c0d46eaa3b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7754def2a1547a806957f3bc06c2097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5adc18ca424552b35ab939e9d57943e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/54dc2e53-616c-4fd1-b144-e656d14a5118.png?resizew=148)
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4卷引用:福建省福州市长乐区鹤上中学2022-2023学年九年级上学期期中数学试题
福建省福州市长乐区鹤上中学2022-2023学年九年级上学期期中数学试题北京景山学校大兴实验学校2022-2023年八年级上学期数学期末试卷(已下线)专题23.1 图形的旋转【十大题型】-2023-2024学年九年级数学上册举一反三系列(人教版)(已下线)专题3.2 图形的旋转【十大题型】-2023-2024学年九年级数学上册举一反三系列(浙教版)
名校
3 . 如图,
为
的直径,
,
、
分别交
于点
、
,
于点
,
于点
,
,下列结论:
;
;
;
;
上述结论中正确的是______
填上所有正确结论的序号![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.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/8e99cd1610de98c8332da8c4520aad6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8136d1005cee4f37655508ecf0e856a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81e24376a13d648c2ed0dc73bc710e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1af52cb73c4f24422ff5edeae792096e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167a994eda6e1db8bad43b91967e0386.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ef56afb914cc88d01c8d3b291b17e63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b371a8f2d4951b451ca3ae5495d43afd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad558cea7bfcb44118a409691902c990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a301324443eb93b467134a86890dd9ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/1a9923b8-39ed-4637-aa78-25add6ca5231.png?resizew=137)
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4 . 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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名校
5 . 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
6 . 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/2021/10/29/2839691527626752/2914084275544064/STEM/e658bece-a4a4-44ae-be2f-fcb31a9e1f89.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=50°,∠ACB=70°.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;
②三个角都不相等的三角形中,最小的角没有等角分割线;
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.
其中所有正确结论的序号是 .
![](https://img.xkw.com/dksih/QBM/2021/10/29/2839691527626752/2914084275544064/STEM/e658bece-a4a4-44ae-be2f-fcb31a9e1f89.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=50°,∠ACB=70°.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;
②三个角都不相等的三角形中,最小的角没有等角分割线;
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.
其中所有正确结论的序号是 .
您最近一年使用:0次
7 . 如图,点
是等边三角形
内部一点,连接
、
、
,且
,现将
绕点
顺时针旋转到
的位置,对于下列结论:①
是等边三角形;②
;③
;④
.其中结论正确的是__________ (填序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c3fe3eddc09024fdbce00cd08ab4b98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9524e3810e06dc781285f1289e75d653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f517953a21c2a45fd8465072c44bfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da7bcea5a45eeae211f5851f12a7517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90de825299eb86f8661b70a8accfa596.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02413d06ae10743c4ae0748ef02a2131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f4cb33cdb3e2994ac7b9a0abbabed2.png)
![](https://img.xkw.com/dksih/QBM/2022/1/8/2897166123499520/2916338960744448/STEM/4d2810f6ec5f4bc8bb9777e32017da20.png?resizew=177)
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8 . 如图,点
在
内部,点
与点
关于
对称,点
与点
关于
对称.甲、乙两位同学各给出了自己的说法:甲:若
,则
是等边三角形;乙:若
,则
.对于两位同学的说法,下列判定正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6131160eaee962470abc7771df265c6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc51601b6c84e2ffade0e91c9feaa970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c84a56823287fa2b878302cff66fcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aefee236ce95b71927b9048409c5c68.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/6/f0e4b685-d0e5-4b79-a272-8a50359cdb32.jpg?resizew=146)
A.甲正确 | B.乙正确 | C.甲、乙都正确 | D.甲、乙都错误 |
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名校
9 . 如图,已知AC平分∠BAD,CE⊥AD于点E,BC=CD.有下列结论:①∠ABC+∠ADC=180°;②AB+AD=2AE;③∠CBD=∠CAB;④AD﹣AB=2DE.其中正确结论的序号是 _______ .
![](https://img.xkw.com/dksih/QBM/2021/12/1/2862911525904384/2863088230195200/STEM/b5831089-0c98-4348-b84a-58ee2a70d7df.png?resizew=159)
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2021-12-03更新
|
377次组卷
|
2卷引用:广东省广州市第二中学2021-2022学年八年级上学期期中数学试题
名校
10 . 如图,已知点
是射线
上一点,过
作
交射线
于点
,
交射线
于点
,给出下列结论:①
是
的余角;②图中互余的角共有3对;③
的补角只有
;④与
互补的角共有3个,其中正确结论有______ (把你认为正确的结论的序号都填上).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e1e803e0130cd7a3967eff90f11ffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5232ca3c1e0ce4064d0094502aacb063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752fa646a2d9cfca34001748445301c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868ff1350bd72625328c85c3097cd85e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/ca860cec-477f-47dd-92a1-fe05052935b6.png?resizew=172)
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2022-01-15更新
|
283次组卷
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2卷引用:江苏省苏州市苏州高新区实验初级中学2021-2022学年七年级上学期期末数学试题