1 . 如图,某学校(A点)与公路(直线1)的距离为300米,与车站(D点)的距离为500米,现要在公路上建一个小商店(C点),使之与学校A及车站D的距离相等.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/26/757f3667-ae29-4ce7-928e-964452afd208.png?resizew=160)
(1)在图中作出点C;
(2)求商店C与车站D之间的距离.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/26/757f3667-ae29-4ce7-928e-964452afd208.png?resizew=160)
(1)在图中作出点C;
(2)求商店C与车站D之间的距离.
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2 . 如图,在
中,通过尺规作图,得到直线
和射线
,仔细观察作图痕迹,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e569f82eb96d237501ed0fba536e9ac4.png)
___________ °.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c941a2d467928ae2f430dd7a97e3fba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03c157441734cc2f1853bb3e15b631a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e569f82eb96d237501ed0fba536e9ac4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/9d863145-c511-43b0-ac6a-d7ede23923c1.png?resizew=176)
您最近一年使用:0次
2023-03-23更新
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340次组卷
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3卷引用:山西省临汾市霍州市2022-2023学年八年级下学期4月期中数学试题
3 . 如图,在
中,
于点D,点E在
上,连接
并延长交
于点F.已知
,
.下列结论中:①
;②
;③
平分
;④
;⑤F是
中点.其中正确结论的个数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/5ec53ea8-16be-436c-bc88-b3d4f51ef178.png?resizew=159)
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21d4ede0434920cc6d691f15b25df3a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f8c640e2cafa9b5e33019fda162c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e08ec29a533bed542d789aeb7c91b94a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f1f72a76354fc7fbadd58425020d98d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f2a245381e615882ee5feb7793a1df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/5ec53ea8-16be-436c-bc88-b3d4f51ef178.png?resizew=159)
A.2个 | B.3个 | C.4个 | D.5个 |
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4 . 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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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)
5 . 如图,在
中,
,
的平分线
交
于点
,如果
垂直平分
,那么
的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/47491a2a-6d42-486a-b66b-043dcf8ae5b3.png?resizew=190)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68e744f480e11f588570c5d6738799f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.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/2023/2/24/47491a2a-6d42-486a-b66b-043dcf8ae5b3.png?resizew=190)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-02-23更新
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2卷引用:山西省大同市2022-2023学年八年级上学期期末教学质量抽样检测数学试题
6 . 综合与实践
问题情境:课堂上老师展示了一张直角三角形纸片.请同学们进行折纸活动,已知在
中.
,点D、F分别是
上的一点.连接
.
沿直线
折叠,点B恰好落在
上点E处,若
,则
的值______.
(2)如图2,小明将
沿直线DF折叠,点B落在AC上点E处,若
,求证:四边形BDEF是菱形;
(3)如图3.小亮将
沿直线DF折叠,点B落在AC延长线上点E处,且EF平分
,若
,
,求CE的长.
问题情境:课堂上老师展示了一张直角三角形纸片.请同学们进行折纸活动,已知在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aacd125cd30c219d88036b0755b1958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cdba2ac1a72eea482f5578843e00357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e64c953aaf341e772a5fe776fbc78a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/067114bc714c71664bac06594b1e1894.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7558aa5068ceb3d3a35bf56422418dea.png)
(2)如图2,小明将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e64c953aaf341e772a5fe776fbc78a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f303f40859534e2a64d8e39d34ebdb9.png)
(3)如图3.小亮将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e64c953aaf341e772a5fe776fbc78a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cd1bc0388e7fad3e849ca39c67f5034.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
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2023-02-22更新
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4卷引用:山西省运城市盐湖区2022-2023学年九年级上学期期末教学质量监测数学试卷
7 . 如图,在
中,
,
的垂直平分线交
于点D,交
于点E,
的平分线交
于点F,两线交点为点P.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/3b333bc3-b950-4306-b83b-6a346ffdb614.png?resizew=180)
(1)依题意补全图形(要求:尺规作图,保留作图痕迹,不写作法);
(2)连接
,若
,
的周长是
,
_____________;
(3)连接
,设
,则
__________;(用含
的式子表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/998329f9cdb86f5d60d7d5d70fc3781e.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/3b333bc3-b950-4306-b83b-6a346ffdb614.png?resizew=180)
(1)依题意补全图形(要求:尺规作图,保留作图痕迹,不写作法);
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2fae188b381c5ba01b3d9d742c687dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6818a98204f62c1b16699d26ca0c3f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9822e15763be5cb6c49936df274a6748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca90e8a784f990c4097eec9219908d.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f665330943393db16b52a94b464f05f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39764293c76b41c259e3c640f7420456.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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8 . 如图,在
中,已知
,
,
边的垂直平分线交
于点E,交
于点D,且
,则
的长是( )
![](https://img.xkw.com/dksih/QBM/2023/2/20/3178992762191872/3179540272504832/STEM/fc55f0ef6091411e98e0a56825a7f032.png?resizew=213)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54486ba185c2598d90d996821c7e8159.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/0ad4d3380ccd6ca31231ab61373a3ee3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2023/2/20/3178992762191872/3179540272504832/STEM/fc55f0ef6091411e98e0a56825a7f032.png?resizew=213)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-02-21更新
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2卷引用:山西省吕梁市交口县2022-2023学年八年级上学期期末数学试题
名校
9 . 如图,等腰
中,
是等边三角形,点P是
的角平分线上一动点,连按
,则
的最小值为( )
![](https://img.xkw.com/dksih/QBM/2023/2/11/3172347332681728/3177634681225216/STEM/f65226ae6b5548dc8bf539a5d52cf51b.png?resizew=150)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e4430b8d1a928af2c211661d8d8ccd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc65b0d331e0ca569e87bcc4a07be2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/186dee1a1cf68677d143172a2a50709c.png)
![](https://img.xkw.com/dksih/QBM/2023/2/11/3172347332681728/3177634681225216/STEM/f65226ae6b5548dc8bf539a5d52cf51b.png?resizew=150)
A.16 | B.20 | C.24 | D.32 |
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4卷引用:山西省晋中市博雅培文实验学校初中部 2022-2023学年七年级下学期期末数学试题
山西省晋中市博雅培文实验学校初中部 2022-2023学年七年级下学期期末数学试题(已下线)专题13.23 课程学习(最短路径问题)(培优练)-2023-2024学年八年级数学上册基础知识专项突破讲与练(人教版)(已下线)专题2.23 轴对称的最值问题(培优练)-2023-2024学年八年级数学上册基础知识专项突破讲与练(苏科版)河南省郑州市中原区郑州外国语中学2021-2022学年七年级下学期期末数学试题
10 . 如图,在长方形
中,
,点
为边
上的一个动点,把
沿
折叠,若点
的对应点
刚好落在边
的垂直平分线
上,则
的长为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d47534b2ae1364341b64ca06bacd40f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/a5762e52-553e-4aa9-99b2-38119f80ac94.jpg?resizew=145)
您最近一年使用:0次
2023-02-16更新
|
213次组卷
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3卷引用:山西省晋中市2022-2023学年八年级上学期期末数学试卷