1 . 在
中,
,小丽进行如图步骤尺规作图,根据操作,对下列判断正确的序号是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/15/101e095f-b4c9-4e1e-b855-606294af3c91.png?resizew=420)
①
平分![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
②
是
的中线
③![](https://staticzujuan.xkw.com/quesimg/Upload/formula/262b2db8ece093b7e5271df0a68d9bce.png)
④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd048da7ee184e5da8b3e57005aca0d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/15/101e095f-b4c9-4e1e-b855-606294af3c91.png?resizew=420)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/262b2db8ece093b7e5271df0a68d9bce.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd048da7ee184e5da8b3e57005aca0d0.png)
A.①②③④ | B.③④ | C.②③ | D.②③④ |
您最近一年使用:0次
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2 . 在
中,
,小丽进行如图步骤尺规作图,(1)分别以点
,
为圆心,大于
长为半径作圆弧,相交于
,
,连接
交
,
于点
,
.(2)连接
.根据操作,对下列判断:①
平分
;②
是
的中线;③
;④
,正确的序号是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/6/dce1bdf6-25e8-4370-afdf-956fe1e988cb.png?resizew=163)
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d452f74791f58e8400cb8d2d6038dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/8455657dde27aabe6adb7b188e031c11.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f4eb640505099730001c4cbe65c3cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/262b2db8ece093b7e5271df0a68d9bce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/6/dce1bdf6-25e8-4370-afdf-956fe1e988cb.png?resizew=163)
A.①②③④ | B.②④ | C.③ | D.②③④ |
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2023-03-16更新
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189次组卷
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2卷引用:山西省实验中学2022-2023学年八年级下学期数学第一章三角形的证明单元质量监测试题(3月考)
名校
3 . 下面是某数学兴趣小组探究用不同方法作一个角的平分线的讨论片段,请仔细阅读,并完成相应的任务.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/a00623f1-f1f4-4704-9151-b69af1fd1f30.png?resizew=510)
任务:
(1)小明得出
≌
的依据是 (填序号).
①
②
③
④
⑤![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9970629e91021aa64fb871c83746418c.png)
(2)小军作图得到的射线
是
的平分线吗?请判断并说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/a00623f1-f1f4-4704-9151-b69af1fd1f30.png?resizew=510)
小明:如图1,(1)分别在射线![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() 简述理由如下: 由作图知, ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() 小军:我认为小明的作图方法很有创意,但是太麻烦了,可以改进如下,如图2,(1)分别在射线 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() …… |
(1)小明得出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0f14966ee816a0d5d46f4c110d58b3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc40fc0120210a5dd3f406e18ab0bd5a.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cbfd199e0ba3e1ec7016a44454e7a3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec76570a0ddc83c103a4b77589d80701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c56ffc1f3244957d01e53013868fa76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a2ba04decd9d9204ec64d567af55721.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9970629e91021aa64fb871c83746418c.png)
(2)小军作图得到的射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
您最近一年使用:0次
2022-11-12更新
|
80次组卷
|
2卷引用:河南省新乡市河南师范大学附属中学2021-2022学年八年级上学期期中数学试题
4 . 下列说法,正确的是( )
A.一个三角形两边的垂直平分线的交点到这个三角形三边的距离相等 |
B.“若![]() ![]() |
C.在角的内部到角的两边距离相等的点一定在这个角的平分线上 |
D.用反证法证明“三角形中必有一个角不大于![]() ![]() |
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2021-04-30更新
|
453次组卷
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8卷引用:广东省深圳市龙岗区2020-2021学年八年级下学期期中数学试题
广东省深圳市龙岗区2020-2021学年八年级下学期期中数学试题广东省深圳市点学校2021-2022学年八年级下学期期中数学试题广东省佛山市顺德区养正中学2021-2022学年八年级下学期期中评价数学试题广东省佛山市高明区初中教学联盟2022-2023学年八年级下学期第二次月考数学试题山东省枣庄市滕州市2022-2023学年八年级下学期期中数学试题山东省枣庄市滕州市荆河街道滕西中学2023-2024学年八年级下学期第一次月考数学试题山东省菏泽市成武县成武一中实验学校2022-2023学年九年级上学期12月月考数学试题山东省菏泽市成武一中实验学校2022-2023学年九年级上学期第一次学业评估测试数学试题
名校
5 . 如图,在
中,
,点D为图中所作直线和射线与AC的交点,根据图中尺规作图痕迹,判断以下结论错误的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/ceb91039-c51f-4b7f-a81d-cec3928ea15c.png?resizew=209)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633fa64d9823c99687c6ac42387926cd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/ceb91039-c51f-4b7f-a81d-cec3928ea15c.png?resizew=209)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-11-06更新
|
378次组卷
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5卷引用:浙江省宁波市鄞州区鄞州蓝青学校2022-2023学年八年级上学期期中数学试题
6 . 如图,在
中,分别以点
和点
为圆心,大于
的长为半径画弧,两弧相交于点
,
,作直线
分别交
,
于点
,
下列判断错误的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/18/f526137d-b169-4557-9756-a5014f1c5ced.png?resizew=141)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.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/a4cb1a4c5afb590c7c17de14d15651e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f70e392e12ac3eed1b5e46888db4e01.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/18/f526137d-b169-4557-9756-a5014f1c5ced.png?resizew=141)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-08-18更新
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348次组卷
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4卷引用:福建省宁德市福安市2021-2022学年八年级下学期期中数学试题
福建省宁德市福安市2021-2022学年八年级下学期期中数学试题(已下线)第2章 轴对称图形综合测试卷 -【帮课堂】2022-2023学年八年级数学上册同步精品讲义(苏科版)(已下线)第十三章 轴对称(A卷·知识通关练) -【单元测试】2022-2023学年八年级数学上册分层训练AB卷(人教版)福建省福安市赛岐中学2021-2022学年八年级下学期期中数学试题
名校
7 . 如图,
是
的角平分线,
垂直平分
,且交
于点D,判断以下结论错误的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/11/30c30b41-3546-409a-b828-3e294cecbe28.png?resizew=250)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/11/30c30b41-3546-409a-b828-3e294cecbe28.png?resizew=250)
A.![]() | B.![]() | C.![]() ![]() | D.四边形![]() |
您最近一年使用:0次
名校
8 . 如图,在
中,
,
于点D,
于点E,
与
交于点F,连接
,下列结论:①
;②
;③
;④若
,则
.其中正确结论的序号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c42ed2e5bd5a0f033e24008697bf4963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d320f180419175d75eebc618cc458b39.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/939a414e366d0b6dfe30f259d232091d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7bd0846e377e291fc3483792e2d599a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0be186da1b75b78aa39b8cdbe9438a6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab8212d2d31484b8f8ef40ea3e9b17e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ef15c28cb324a018a8575133f403506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/349a9e0c81d7818c6fb1951476efa2a2.png)
A.①②③ | B.①②④ | C.②③④ | D.①③④ |
您最近一年使用:0次
9 . 如图,在
中,
是
的中点,
,
,若
,则以下结论:①四边形
是平行四边形;②
是等腰三角形;③四边形
的周长是
;④四边形
的面积是16;正确的是________ (填序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2043ff1b8a975a71f72b93a499a4e0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd657e48b15b9b54a55817e2c26b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b772f3670080e6146b56d2b5673efec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d199976a12b9e435a3835ea348d77ac4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9beeedb7ddaac2cd3d37151d058ab7fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/410573ad2d8f766d8fc395ebc483cb37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83e0607748eb4205761559567a31043e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/410573ad2d8f766d8fc395ebc483cb37.png)
您最近一年使用:0次
10 . 如图,在
中,
,
,
分别为
,
边上的高,
,
相交于点
,连接
,则下列结论:
;
;
;
若
,则
周长等于
的长
其中正确的有______
写出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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c42ed2e5bd5a0f033e24008697bf4963.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f6e6f4067cc69039f1818344eb73d3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45bd00f1b2c6b150f0df9e5d7f4c2ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84bd5d78982af926fa945d6a52e792f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d8b8edd94bc4d5d517ec77e56800e41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b159f0833502ede6203e219d48874330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c7b7be09862e90dd0065ec7b712e024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e1d0f65817ba32a732040518f41440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/6/56f7af6e-9c9a-45af-bf02-5ed66dd2e6bb.png?resizew=174)
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