1 . 如图,已知
中,
,P为
内一点,过点P的直线
分别交
于点M、N,若M在
的垂直平分线上,N在
的垂直平分线上,则
的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/0d283929-c01b-43b2-b41d-f529a6796199.png?resizew=121)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50139f281e4d1a6d1dcb4f4327d7b2c.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/3355e2fa0ac6c675f02ee36c3ced4f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3c1375c64dceef45846308a418cf7f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/0d283929-c01b-43b2-b41d-f529a6796199.png?resizew=121)
A.![]() | B.![]() | C.![]() | D.无法确定 |
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2 . 如图,
是
的垂直平分线,
,
的周长为11,则
的周长是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/12/a5fa5bed-b0b6-4963-8e51-8a88aab4c6e6.png?resizew=176)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/12/a5fa5bed-b0b6-4963-8e51-8a88aab4c6e6.png?resizew=176)
A.14 | B.19 | C.26 | D.30 |
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3 . 和三角形三个顶点的距离相等的点是( )
A.三条角平分线的交点 | B.三边中线的交点 |
C.三边上高所在直线的交点 | D.三边的垂直平分线的交点 |
您最近一年使用:0次
2024-03-11更新
|
242次组卷
|
5卷引用:黑龙江省哈尔滨市南岗区萧红中学2021-2022学年八年级下学期开学考试数学(五四制)试题
名校
4 . 下列命题中正确的是( )
A.如果三角形一条边上的中线等于这条边的一半,那么这个三角形是直角三角形; |
B.到三角形三个顶点距离相等的点是三角形三条角平分线的交点; |
C.等腰三角形的高、中线、角平分线互相重合; |
D.如果两个三角形全等,则它们必是关于直线成轴对称的图形. |
您最近一年使用:0次
5 . 如图,
中,
的平分线交
于点
,过点
作
,
,垂足分别为
,
,下面四个结论:①
;②
垂直平分
;③
一定平行
;④
;其中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/eb0fd4fd-661c-4a67-85d7-28ccd76ea0b3.png?resizew=139)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa30a9ee227af2b387cf6e028c20d7d.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/8b0328aeed9a9230535503f7c1b3f9db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.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/4844c0de09f10befa574e580059373e1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/eb0fd4fd-661c-4a67-85d7-28ccd76ea0b3.png?resizew=139)
A.①②④ | B.①②③ | C.①③④ | D.①②③④ |
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6 . 如图,在
中,
.分别以
,
为圆心,大于
的长为半径画弧,分别交于
,
两点,连接
交
于点
.若点
到
,
的距离相等,则
的度数为( )
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d49404351575703cfe8325d1352ec9.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/3818a2c9919d358b4c3713396093822b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/d4050eef-66aa-4d2b-986e-63f3a0a5d446.png?resizew=139)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 如图,在等腰
中,
,
,
的平分线与
的垂直平分线交于点
,点
沿
折叠后与点
重合,则
的度数是( )
![](https://img.xkw.com/dksih/QBM/2023/10/16/3347146899079168/3449069552893952/STEM/ff801be61f0b45a5972cbeb97b626691.png?resizew=165)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9693da3141d4af5e8deb0fd17dd5aeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adcae9d00980803e5955228d1e217abe.png)
![](https://img.xkw.com/dksih/QBM/2023/10/16/3347146899079168/3449069552893952/STEM/ff801be61f0b45a5972cbeb97b626691.png?resizew=165)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
8 . 如图,
.若
和
分别垂直平分
和
,则
的度数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85d180f59502f0d2ea973cb00a45184c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438f34bc8b04e8c494b91306ac6fe352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3171b3d11c6f4619e189677345357508.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/4ff7023ec0f513c7d0ef86859a5ede54.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 如图,在
中,
,按下列步骤作图:
①分别以点
为圆心,大于
的长为半径画弧,两弧相交于点
,作直线
交
于点
;
②以
为圆心,
长为半径画弧交
于点
.
方方探究得到以下两个结论:
①
是等腰三角形;②若
,则点
到
的距离为
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/12e0a949-70b2-48f2-a886-95b59e2002f7.png?resizew=203)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f76899b3a0bfbbdae7cb1148ad4bf018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
①分别以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0520e9675bc1b416e8b8f01eb69fd13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d452f74791f58e8400cb8d2d6038dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44755c5fee4b90266eac73ad47a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
②以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
方方探究得到以下两个结论:
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee273d0c7625335ed2c58242799261e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74f62dc2e15c4d4214aa38ec7f5a54d5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/12e0a949-70b2-48f2-a886-95b59e2002f7.png?resizew=203)
A.结论①正确,结论②正确 | B.结论①正确,结论②错误 |
C.结论①错误,结论②正确 | D.结论①错误,结论②错误 |
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10 .
中,内切圆
和边
分别相切于点
, 则点
是
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b372e638a9dbed3bbf92454d816d212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c5b88ec996d2d117987e7303cefe4ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
A.三条高的交点 | B.三个内角平分线的交点 |
C.三条角平分线的交点 | D.三边垂直平分线的交点 |
您最近一年使用:0次