1 . 在
中,
,点M为边
的中点,点D在边
上.
(如图①),求
的长;
(2)过点M作
与边
所在的直线交于点E(如图②),试探究:线段
、
、
三者之间的数量关系,并证明你的结论.
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8709904b4dc6a46631e1411555ab8868.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
(2)过点M作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/848710a5bd7f8be60d6bc2f97a3cd555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
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2 . 如图,四边形
是平行四边形.
的垂直平分线
,垂足为O(不写作法,保留作图痕迹);
(2)若直线
分别交
、
于E、F两点,连接
、
.判断四边形
的形状,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9766e5eb6796dafc5ffe212afdfc43c0.png)
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名校
3 . 如图,
中,
,
垂直平分
,交
于点
,交
于点
,且
.
,求
的度数;
(2)若
周长
,
,求
长.
![](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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5fc6ead6416492c231c320a5486f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34fb900d14718e4a47eb9d8a17b0dd8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d8cc740f1c73ccff0db9e7f9b45bbd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bfe6362e241ce790c6c30dfdfe72f07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30e7974fb64e45c1a5c1a84f6b96b558.png)
您最近一年使用:0次
2024-05-08更新
|
70次组卷
|
5卷引用:湖南省常德市武陵区第七中学2021-2022学年八年级上学期期中数学试题
湖南省常德市武陵区第七中学2021-2022学年八年级上学期期中数学试题(已下线)2.4.1 线段、角的对称性(练习)-2022-2023学年八年级数学上册同步精品课堂(苏科版)湖南省岳阳开发区长岭中学2022-2023学年八年级上学期期中数学试题江西省南昌市青山湖区2023-2024学年下学期八年级期中数学试题江西省景德镇市乐平市2023-2024学年八年级下学期期中数学试题
4 . (1)解不等式.
,并把它的解集表示在数轴上.
中,
,
垂直平分
,若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b5df4d93945802bffdd7d85162a5205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/6d2b365fd3ae84b5355eaa01639e8baf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35803969509655f72b4118503ae1c966.png)
您最近一年使用:0次
2024-05-08更新
|
23次组卷
|
2卷引用:江西省南昌市青山湖区2023-2024学年下学期八年级期中数学试题
5 . 尺规作图:如图所示,一条铁路经过
、
两地,计划修一条经过
到铁路的最短公路
,并在公路
上建一个维修站
,使得
到
、
距离相等.
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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6 . 一个快递公司打算在两交叉公路间建一个菜鸟驿站,以便于两条公路上的物流车快件卸后存放,又要方便
两处居民区的居民取件.请依据你现有的知识设计出一个相对合理的地点(尺规作图,保留痕迹),并说明你的设计理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
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名校
7 . 如图,
是
的高,
垂直平分线分别交
,
,
于点
,
,H.连接
,
.
;
(2)若
,求
的长.
![](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/03902478df1a55bc99703210bccab910.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/03902478df1a55bc99703210bccab910.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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235efb0966d2d2342357833ee4cc0a58.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82773737609e65dea3c5c67099f1b10d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
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8 . 如图所示是小华完成的尺规作图题,已知:矩形
.
为圆心,以大于
长为半径,在
两侧作弧,分别交于点
;
②作直线
;
③以点
为圆心,以
长为半径作弧,交直线
于点
, 连接
.
根据小华的尺规作图步骤,解决下列问题.
(1)填空:
.
(2)过点
作
, 交直线
于点
.
①求证:四边形
是平行四边形;
②请直接写出平行四边形
的面积
和矩形
的面积
的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/293b7143310c9f4bc16a534862218428.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d49404351575703cfe8325d1352ec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a460f95e8ebabac97d572fecea8fb0.png)
②作直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
③以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c003801954953263f8343b62f2f9fe7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ad5862011af3efd2e9f38569ea49bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b260ea59dd7e30a224a6d390f5116b2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6aa443ddadba561a66f3eb8ca03338.png)
根据小华的尺规作图步骤,解决下列问题.
(1)填空:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a207bee9f887c067fa993974065e51fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c7f9abd8d00620b60aaffa6e3fb2a7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2528b3d99e29ab2fca0c1b6938e8c14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
①求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5bf6a8839b64d3cf08d18bb4a02d02.png)
②请直接写出平行四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5bf6a8839b64d3cf08d18bb4a02d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389abe04a965f4f8c9c7a692b1db77f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0097f257192599e184a30646921cc8d.png)
您最近一年使用:0次
9 . 如图,
中,
,
,
,过
的垂直平分线上一点
作
于
,
延长线于
;且
,连接
.
;
(2)
的长为______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241465bb8b380fc37d46763241c92e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edd0c00f62c22e90e7d542a2f8dd83d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b36a1938df65db2b68bf7595b97bafa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950fd16ca9eb3eac0c3e4b07683fdfe1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3929c4d33f26b19628b7af32b96a692a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/076686319a92dd08b69af5868431934e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a046e17f7d9a00da2aa20c68ad29755b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
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10 . 如图,一次函数
的图象与x轴交于点A,与y轴交于点B,点D为x轴上的点(在点A右侧),
为
的垂直平分线,垂足为点E,且
,连接
.
是菱形;
(2)连接
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a98e24892abc0eb34d5216d4e89c61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd276f0d8c46c557af3693203d36768.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
您最近一年使用:0次