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1 . 如图,在
中,
,根据尺规作图的痕迹,判断以下结论不一定成立的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/14/ef6b4a5c-bda6-4977-b5fc-87a424acdb5a.png?resizew=148)
A.![]() | B.![]() | C.![]() | D.![]() |
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15卷引用:广东省惠州市惠城区水口中学2023-2024学年八年级下学期开学考数学试题
广东省惠州市惠城区水口中学2023-2024学年八年级下学期开学考数学试题吉林省长春市朝阳区长春外国语学校2023-2024学年八年级上学期9月月考数学试题河南省许昌市2023-2024学年八年级上学期期中数学试题陕西省咸阳市咸阳市秦都区马泉初级中学2023-2024学年七年级上学期期末模拟数学试题辽宁省葫芦岛市连山区2023-2024学年八年级上学期期中数学试题山东省滨州市邹平市梁邹实验初级中学2023-2024学年八年级上学期期中数学试题湖北省恩施土家族苗族自治州建始县2022-2023学年八年级上学期期末数学试题(已下线)YHmlsjsxBS809 .pdf河北省石家庄市第四十八中学2023-2024学年八年级上学期月考数学试题重庆市渝北区六校联盟2023-2024学年八年级上学期第二次大练兵(期中)数学试题天津市河东区2023-2024学年八年级上学期期末数学试题河南省信阳市平桥区羊山中学2023-2024学年八年级上学期期末数学试题山东省德州市宁津县第四、第五实验中学2023-2024学年八年级上学期12月月考数学试题辽宁省抚顺市望花区2023-2024学年八年级上学期期中数学试题山东省德州市乐陵市化楼镇中学2023-2024学年八年级上学期第二次月考数学试题
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2 . 已知(如图),在
中,
是
的中点,过点
的直线
交
于点
,交
的平行线
于点
,
,交
于点
,连结
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/26/abb78f5a-9e00-47d2-bda8-3ea0d2afd93b.png?resizew=148)
(1)求证:
.
(2)试判断
与
的大小关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/e0e57a13c665af88f326c9890072bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/857ddadd26b361243d81ffb744c7d4f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/26/abb78f5a-9e00-47d2-bda8-3ea0d2afd93b.png?resizew=148)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82921e42bc0dd17888224d9a40ca9eea.png)
(2)试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c66b632c49dbebc4b2182592d68ee937.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
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12卷引用:福建省龙岩市上杭县第三中学2022-2023学年八年级上学期开学考试数学试题
福建省龙岩市上杭县第三中学2022-2023学年八年级上学期开学考试数学试题福建省龙岩市高级中学2020-2021学年八年级上学期第一次月考数学试题(已下线)专题13.4 线段的垂直平分线的判定与性质【九大题型】-2023-2024学年八年级数学上册举一反三系列(人教版)(已下线)专题13.6 线段的垂直平分线的判定与性质【九大题型】-2023-2024学年八年级数学上册举一反三系列(华东师大版)(已下线)专题2.4 线段的垂直平分线的判定与性质【九大题型】-2023-2024学年八年级数学上册举一反三系列(苏科版)(已下线)专题2.7 线段的垂直平分线的判定与性质【九大题型】-2023-2024学年八年级数学上册举一反三系列(浙教版)黑龙江省佳木斯市富锦市实验中学2023-2024学年八年级上学期期中数学试题江苏省南京市江宁区南京师范大学附属中学江宁分校2023-2024学年八年级上学期10月月考数学试题广东省汕头市潮南区司马浦初中学校联考2023-2024学年八年级上学期期中数学试题江苏省南通市第一初级中学2023-2024学年八年级上学期第一次学情调研数学试题(已下线)专题15.4 线段的垂直平分线的判定与性质【九大题型】-2023-2024学年八年级数学上册举一反三系列(沪科版)四川省德阳市中江县2023-2024学年八年级上学期期中数学试题
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3 . 在
中,
,
垂直平分
分别交
,
于
,
.如果
是等腰三角形,那么
的大小是______ .
![](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/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db609c0ddcb9af21ddbf443d3e527cfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
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4 . 如图,在
中,
,
平分
交
于点D,
垂直平分
,垂足为点E,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4397f6e86c69e6b597e7e8635afbfb8.png)
__________ .
![](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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4397f6e86c69e6b597e7e8635afbfb8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/11/b76226fc-74a7-4a46-ad75-16bbf5275536.png?resizew=163)
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5 . 下列说法中:
(1)与这条线段两个端点距离相等的点,在这条的垂直平分线上;
(2)等腰三角形的高、中线、角平分线互相重合;
(3)到
的三个顶点距离相等的点是三条边的垂直平分线的交点;
(4)到
的三边距离相等的点是三条内角平分线的交点.
以上说法中正确的个数( )
(1)与这条线段两个端点距离相等的点,在这条的垂直平分线上;
(2)等腰三角形的高、中线、角平分线互相重合;
(3)到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(4)到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
以上说法中正确的个数( )
A.1 | B.2 | C.3 | D.4 |
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2卷引用:黑龙江省哈尔滨市南岗区哈尔滨工业大学附属中学校2023-2024学年八年级上学期开学考试数学试题
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6 . 如图所示,在平面直角坐标系中,点B的坐标是
,点C的坐标是
,点D为y轴上一点,点A为第二象限内一动点,且
,过D作
于点M.
(1)求证:
.
(2)若点E在
延长线上,求证:
平分
.
(3)当A点运动时,
的值是否发生变化?若不变化,请求出其值:若变化,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde23c59b78876bd61b1d87a954cc916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba870ac7e456d8daa098c9d52aeccc2c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/28/d89b093b-549e-4042-9402-cf492b115a1a.png?resizew=136)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c1016bc9ef1c728bccf070a6e4a532f.png)
(2)若点E在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35803969509655f72b4118503ae1c966.png)
(3)当A点运动时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dd3121b6833d675d9a599aa78c31ef.png)
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7 . 如图,
是矩形
的对角线.
(1)尺规作图:作线段
的垂直平分线
,交
,
,
分别于
,
,
,(保留作图痕迹,不写作法);
(2)连接
,若
,
,求
的长为多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/10/fa630f96-55f1-4dac-a98d-89c71d042bd9.png?resizew=161)
(1)尺规作图:作线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4b6c682d7b0741fb1f12a073394fc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
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8 . 如图,在
中,
,
请用尺规作图法在边
上求作一点
,使
保留作图痕迹,不写作法![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3ee061bc43b327214ea7981a25137c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3b55a929936a84a62d6ffeb2969319.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a5fda008d14c5822905e4fda8dfeb9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/18/fe50cadf-6dbf-4cb0-bd6e-5608466a2310.jpg?resizew=160)
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9 . 如图,直线
是线段
的垂直平分线,
为直线
上一点,若
的周长为14,
,则线段
的长度为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/18/07f40ca8-1d3b-41de-a0a1-3d45136ef84f.jpg?resizew=118)
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab2c27eac56fffa4cd7dbe1dcdf1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/18/07f40ca8-1d3b-41de-a0a1-3d45136ef84f.jpg?resizew=118)
A.10 | B.6 | C.5 | D.3 |
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10 . 如图,平行四边形
的周长是
相交于点O,
交
于点E,则
的周长是______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cb495382ff5a02c8ef701bc96376265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/299fe914d64f3a06f9b641d5591fc47a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/405554b6a34430029b4bab739d69bca3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/14/762578e1-356d-4a01-99c5-369700509f46.png?resizew=188)
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