1 . 如图,在锐角中,
,现进行如下操作:
①分别以为圆心,大于
长为半径作弧交于相异两点;
②连接两点交于
,以
为圆心,
长为半径作
;
③在上取点
,点
在
内部,连接
.
设,若
,则
的度数为( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2 . 如图,在
中,
,
的垂直平分线分别交
于点
,垂足分别为
,
,已知
的周长为22,则
的长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3648c864f9f58da1dbb166fee84cfeaf.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/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/528f1039-2f83-40bb-9643-99ae20d57e50.png?resizew=199)
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3 . 如图,在
中,
,点
在
边上且点
到点
的距离与点
到点
的距离相等.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/2fd0d9fc-146b-48a5-937a-f38227ebf812.png?resizew=90)
(1)利用尺规作图作出点D,不写作法但保留作图痕迹;
(2)连接
,若
的底边长为3,周长为17,求
的周长.
![](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/8455657dde27aabe6adb7b188e031c11.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/2fd0d9fc-146b-48a5-937a-f38227ebf812.png?resizew=90)
(1)利用尺规作图作出点D,不写作法但保留作图痕迹;
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
您最近一年使用:0次
4 . 如图,,
,
的垂直平分线
交
于点
,则
的周长为
.
您最近一年使用:0次
5 . 如图,在中,
,
平分
交
于点
,
垂直平分
于点D.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/12/a750bef2-a06b-415e-855d-c3225786aaa7.png?resizew=139)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d63e1e4e2ae879845946f9cf28b980c4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71beeaed4cb4522f74bbdf62dcd77073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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6 . 如图,在中,分别以
,
为圆心,大于线段
长度一半的长为半径作弧,相交于点
,
连接
,交
于点P.若
,
的周长为
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/81af2de9-19da-47f0-9e77-69ba1802a818.png?resizew=133)
A.6 | B.7 | C.8 | D.9 |
您最近一年使用:0次
2024-03-20更新
|
234次组卷
|
3卷引用:浙江省温州市鹿城区第二中学2023-2024学年八年级上学期期中数学试题
7 . 如图,在
中,
,
的平分线相交于点E,
边的垂直平分线相交于点D.若
,则
的度数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94768c4b076fabb1ef1d5c318f019e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84ee8de2d272e8a3cad423ef206cd7eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a72dfbf0138a611174c36ce077e0c47.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/19/01df4225-73b8-43da-b079-18896f9a6fd9.png?resizew=186)
您最近一年使用:0次
8 . 如图,在中,
,
,
,点
在线段
上,以
为边作等边
,点
和点
分别位于
两侧,连接
,
.则下列四个结论:①
②
③
④直线
,其中正确的结论有( )个
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
9 . 如图,已知
中,(
),用尺规在线段
上确定一点
,使得
,则符合要求的作图痕迹是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a68d1411b29141ea7fc377b44ad92611.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b13c082d45f4c89d93b602d7e9f74a3.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
10 . 如图,在矩形
中,按以下步骤作图:①分别以点
和点
为圆心
的长为半径作弧,两弧相交于点
和
,②作直线
交
于
,若
,
,则该矩形的周长为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c93148adbc6e856da9a9d263f485d003.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6370d6c626bdabf1fc694501ee6c714f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8832c5450a61500ccbf73d95e16f449.png)
您最近一年使用:0次
2024-03-19更新
|
89次组卷
|
8卷引用:四川省成都市七中育才学校2019-2020学年九年级线上检测数学试题