已知:
是
的对角线.
的垂直平分线,与
相交于点
,连接
.(保留作图痕迹,不写作法)
(2)在(1)的条件下,若
,
,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
(2)在(1)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
2023·山东淄博·一模 查看更多[1]
(已下线)2023年山东省淄博市周村实验中学中考数学一模模拟试题
更新时间:2024-04-22 15:21:04
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相似题推荐
解答题-问答题
|
适中
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【推荐1】如图,在△ABC中,AB=AC,AB的垂直平分线交AB于N,交AC于M.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/18/dde5844e-0b19-4ae6-86e4-72102eead6a7.png?resizew=140)
(1)若∠B=50°,则∠NMA的度数是 ;若∠B=60°,则∠NMA的度数是 ;
(2)你认为∠B与∠NMA有怎样的数量关系?说出你的理由;
(3)连接MB,若AB=8cm,△MBC的周长是14cm.求BC的长;
(4)点Q是BC边上的中点,连接AQ,与直线MN相交于点P,点P到△ABC三个顶点的距离有怎样的关系,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/18/dde5844e-0b19-4ae6-86e4-72102eead6a7.png?resizew=140)
(1)若∠B=50°,则∠NMA的度数是 ;若∠B=60°,则∠NMA的度数是 ;
(2)你认为∠B与∠NMA有怎样的数量关系?说出你的理由;
(3)连接MB,若AB=8cm,△MBC的周长是14cm.求BC的长;
(4)点Q是BC边上的中点,连接AQ,与直线MN相交于点P,点P到△ABC三个顶点的距离有怎样的关系,请说明理由.
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解答题-证明题
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【推荐2】定义:一个三角形,若过一个顶点的线段将这个三角形分为两个三角形,其中一个是直角三角形,另一个是等腰三角形,则称这个三角形是等直三角形,这条线段叫做这个三角形的等直分割线段.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/cfd15d68-e876-4da2-a033-5dec5b94826c.png?resizew=330)
例如:如图1,在
中,
∵
于D,且
,
∴
是直角三角形,
是等腰三角形,
∴
是等直三角形,
是
的一条等直分割线段.
(1)如图2,已知
中,
,
是
的垂直平分线,请说明
是
的一条等直分割线段.
(2)若
是一个等直三角形,恰好有两条等直分割线,
和
均小于
,求证:
是等腰三角形.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/cfd15d68-e876-4da2-a033-5dec5b94826c.png?resizew=330)
例如:如图1,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a1d4c140243ba9a9bd7256ec2bbce6.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(1)如图2,已知
![](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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解答题-作图题
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适中
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【推荐1】作图,思考并回答问题:如图,已知:ABC
(1)按下列要求作图:取边AB、AC的中点D、E,连结线段DE;
(2)用刻度尺测量线段 DE、BC的长度分别为 ;
(3)用量角器得
B与
ADE的度数分别为 ;
(4)通过(2)、(3)你发现DE与BC什么关系?请写出你的猜想.
(1)按下列要求作图:取边AB、AC的中点D、E,连结线段DE;
(2)用刻度尺测量线段 DE、BC的长度分别为 ;
(3)用量角器得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665ffcdb7c57534dc184cc840471f2f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665ffcdb7c57534dc184cc840471f2f5.png)
(4)通过(2)、(3)你发现DE与BC什么关系?请写出你的猜想.
![](https://img.xkw.com/dksih/QBM/2019/6/6/2219989139791872/2278358495690752/STEM/1bf6016bac5a42b7a5961aa353507698.png?resizew=229)
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解答题-作图题
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适中
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【推荐2】已知:用直尺和圆规作图,(不写作法,保留作图痕迹,)
如图,在∠AOB内,求作点P,使P点到OA,OB的 距离相等,并且P点到M,N的距离也相等.
如图,在∠AOB内,求作点P,使P点到OA,OB的 距离相等,并且P点到M,N的距离也相等.
![](https://img.xkw.com/dksih/QBM/2018/10/17/2055522362073088/2055700255080448/STEM/994c371cd1b84f0d9b3e9907d1852d25.png?resizew=238)
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解答题-问答题
|
适中
(0.65)
【推荐1】如图,在直角坐标系中,二次函数的图象与
轴交于
,
两点,
,对称轴为直线
,顶点为点
.
(1)求二次函数的表达式及顶点坐标;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/12225a1a1eda07908309f8100cc34726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd5ab10ef273858bb880c68789871c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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解答题-证明题
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名校
【推荐2】如图,在平行四边形
中,点E,F,G,H分别在边
上,
,
.
(1)如图(1)求证:四边形
是平行四边形;
(2)如图(2)若
平分
,在不添加辅助线的条件下,直接写出长度等于EH的线段(不包括
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f758a811b8a2c260431aa7e6a4060987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/343f75b2c5479c279abca2faed278901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31a2a4934b7b928df3b31c95f53cc4fd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/25/224a3c40-c2f0-406f-9b72-a23cd676ae51.jpg?resizew=348)
(1)如图(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
(2)如图(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b28e1e88b8568aef57d1b907e348b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5481c3c38cf999b4dacada15ea517b8b.png)
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