1 . 如图,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/5/d0c0ebb4-0678-4897-bc47-f4f96cce224e.png?resizew=240)
(1)求证:
;
(2)请用无刻度的直尺作出
边的中点
(不写作法,保留作图痕迹).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a277db452e76240ec83ec6a2864bdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21bfc82e4e534f6261bfb83c40e93d04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79de59390a7059cfdea1f42ce1ffac70.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/5/d0c0ebb4-0678-4897-bc47-f4f96cce224e.png?resizew=240)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ee81929c987732fcb379802eeef7a7.png)
(2)请用无刻度的直尺作出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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2 . “玩转数学”实践活动,是一种非常有效的学习方式,我们一起来动手、动脑玩转数学吧.如图①,折一折:将正方形纸片
折叠,使边
,
都落在对角线
上,展开得折痕
,
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/bf72f30a-d15c-4780-8c16-0825605789ed.jpg?resizew=270)
(1)
_______°;
转一转:如图②,将图①中的
绕点A旋转,使它的两边分别交边
,
于点P,Q,连接
.
(2)猜想线段
、
、
之间的数量关系,并说明理由;
(3)若正方形的边长为6,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/bf72f30a-d15c-4780-8c16-0825605789ed.jpg?resizew=270)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e569f82eb96d237501ed0fba536e9ac4.png)
转一转:如图②,将图①中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e31edc5b71c488ca9942d70d9298f01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(2)猜想线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
(3)若正方形的边长为6,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b7ddeaf0a0ed481573cb15a7c79a6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
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3 . 如图1,已知点
,
,且a、b满足
,平行四边形
的边
与y轴交于点E,且E为
的中点,双曲线
上经过C、D两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/23/0eefb530-5ec1-4f0e-b5af-5591b12e47ca.png?resizew=409)
(1)求k的值;
(2)点P在双曲线
上,点Q在y轴上,若以点A、B、P、Q为顶点的四边形是平行四边形,直接写出满足要求的所有点Q的坐标;
(3)以线段
为对角线作正方形
(如图3),点T是边
上一动点,M是
的中点,
,交
于N,当T在
上运动时,
的值是否发生变化,若改变,请求出其变化范围;若不改变,请求出其值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4b9486ec9dca95979803bf91ca6c337.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa6e5a12543f954be1a6057c6b2ed51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b1a80812754bbfdc4d786279224a464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/23/0eefb530-5ec1-4f0e-b5af-5591b12e47ca.png?resizew=409)
(1)求k的值;
(2)点P在双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
(3)以线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f7cdcbc721fbde7d5bd0afbf07b529.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d030bc03d5e8e2bbd79de338a7c375ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e605a9ab715e068a48f3d71cd35dc8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96011b527f818364cfe804a39a0e77a7.png)
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名校
4 . 如图,已知
,
,
,B、D、E在同一直线上,则
的度数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d212c1709b8e72a055cf1b5381ef64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25bc18cdb6d15611b5426c695d9932e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6282292819434a8905a212427613fd85.png)
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2024-01-22更新
|
1061次组卷
|
6卷引用:重庆市巴蜀中学2023-2024学年九年级上学期期末数学试题
23-24九年级上·全国·期末
5 . 如图,在
中,
,点D在
边上,
,点E是边
所在直线上的一动点,连接
,将
绕点D顺时针方向旋转
得到
,连接
,则
的最小值为 __________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b0b290ff5c8a1fa0e2ca871886ff38.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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/6c7f80c0-99ee-4d3c-a2e2-fda6fe003b4f.png?resizew=143)
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6 . 如图,正方形
的边长为2.
为与点
不重合的动点,以
为一边作正方形
.设
,点
、
与点
的距离分别为
、
,则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83aaf27b5ee8dbd2dd98d4f07f0a1ade.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31ac1def558351e2e3ed1235c570530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d0252c1b2f7d2a84b5c985d19d547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/088855fbe851ce08bd1a6d40f2ef0c6f.png)
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2024-01-22更新
|
245次组卷
|
5卷引用:陕西省汉中市2023-2024学年九年级上学期期末数学试题
陕西省汉中市2023-2024学年九年级上学期期末数学试题(已下线)易错05 四边形2(七大易错分析 避坑大招 学以致用 易错题通关)-备战2024年中考数学考试易错题 (全国通用)(已下线)第18章 平行四边形(单元测试·基础卷)-2023-2024学年八年级数学下册基础知识专项突破讲与练(人教版)(已下线)第09讲 专题4 平行四边形(特殊的平行四边形)中的最值问题-【帮课堂】2023-2024学年八年级数学下册同步学与练(人教版)上海市浦东新区部分学校2023-2024学年八年级下学期月考数学试题
7 . 在
和
中,
,直线
与
交于点
.
,求证:
;
(2)如图2,若
,写出
与
的数量关系,并说明理由;
(3)如图2,若
,请直接写出
与
的数量关系(用含
的式子表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a9a6eeeebf3cff569578d7366b755aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3d3c378b1118d331d30b63fc587b270.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ab28204a982ab3107a5be7f66014752.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/332084cfb20ebc7efa528abeb9c49e07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(3)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/542ee4f0262c27540d33f54905a11ffe.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/e170f206fdbbd834aad7580c727e2cc6.png)
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名校
8 . 如图,在菱形
中,
是对角线
上的两点,且
.
;
(2)证明四边形
是菱形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8f7a3cf5a6acc41c4932eb8548e9e7.png)
(2)证明四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2330c01a4d2b5b20f106e3e48834d5c0.png)
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2024-01-21更新
|
379次组卷
|
12卷引用:2022年湖南省娄底市初中毕业学业水平考试第一次模拟数学试题
2022年湖南省娄底市初中毕业学业水平考试第一次模拟数学试题2022年新疆乌鲁木齐市九年级中考一模数学试题(已下线)第1章 特殊平行四边形(全章复习攻略与检测卷)(1个性质3个图形4种思想)-【帮课堂】2023-2024学年九年级数学上册同步学与练(北师大版)2023年新疆乌鲁木齐经济技术开发区九年级中考适应性考试数学试题2023年新疆乌鲁木齐市经开区中考5月份数学模拟预测题2023年新疆乌鲁木齐经开区(头屯河区)九年级适应性测试数学模拟预测题2022年西藏中考模拟数学试题2022年江苏省东台市中考模拟考试数学试题云南省楚雄彝族自治州双柏县2021-2022学年九年级上学期期中数学试题青岛版八年级下册第6章平行四边形单元测试数学试题2023年江苏省连云港新海实验中学中考二模数学试题湖北省武汉市新洲区2022--2023学年八年级下学期期末数学试题
9 . 两个大小不同的等边三角形三角板按图①所示摆放.将两个三角板抽象成如图②所示的△
和△
,点B、C、D依次在同一条直线上,连接
.若
,
,则点A到直线
的距离为 _______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b342a682cbd4241855a243da3c016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a0268d04b9dea7629af27af9a0285a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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2024-01-21更新
|
156次组卷
|
5卷引用:2023年吉林省长春市中考一模数学试题
2023年吉林省长春市中考一模数学试题2023年吉林省长春市初中学业水平考试网上阅卷模拟练习数学模拟预测题(已下线)重难点02+三角形与特殊三角形2(已下线)培优冲刺01 三角形中的常见模型综合训练(14模型)-【查漏补缺】2024年中考数学复习冲刺过关(全国通用)吉林省长春市宽城区2023-2024学年八年级上学期期末数学试题
2023九年级上·全国·专题练习
10 . 如图,点
是
上一定点,点
是
上一动点、连接
、分别将线段
绕点
顺时针旋转
到
,连接
,下列结论正确的有( )
①点
在
上;②
;③
;④当
时,
与
相切.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/da82b351-141d-4ed0-ac8f-cf1b38676a25.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4e8c2729b7938b76a27d80f63de438e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307d67fcab1dfca9eb397303310ae2c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbde29c3023e8df2d4f74137a113af6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcc777b8fb663f3d1c9764b3d2715c67.png)
①点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29cad5a3eae0b3aae89d1f1d9cff0788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b70b012b56650a86d9b79ea914e799cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddb98a1be1c6badbb480a4c574092074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943712a5e96b16cc15d775cc4687237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/da82b351-141d-4ed0-ac8f-cf1b38676a25.png?resizew=161)
A.4个 | B.3个 | C.2个 | D.1个 |
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