1 . 如图,
,C在
延长线上,作平行四边形
,连接
,若
,则
周长的最小值是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15148cae568d8960c62a4d0eddf5b03b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf742676db9b42847b6e7255b0456381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
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2 . 如图,平行四边形
的对角线
和
相交于点
,过点
的直线分别交
和
于点
,且
,那么图中阴影部分的面积为______ .
![](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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9187bad38823ef627fce10b6d9ca97b.png)
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3 . 如图, 曲线 C₂是双曲线
绕原点O 顺时针旋转
得到的图形,A 是曲线
上任意一点,点B在直线
上,且
,若
的面积为
则 k 的值为________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b0cd63f5ba507dcd96b9aeac6cfbf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1abd6e8708ee0febe74c09975f359d1c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/e28907e5-e1d6-4b81-b99b-3e00c3da5cb8.png?resizew=253)
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名校
4 . 如图,在
中,
,
,
,
为
边上的高,点
从点
出发,在直线
上以
/
的速度移动,过点
作
的垂线交直线
于点
,当点
运动________
时,
.
![](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/8534a7e9fe8f7710ef4c38214edbb59a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db12ae78321bf5cd5bbf700909208744.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c1468cf3bc2bbc5bee776b882f42eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3df9327f2d81d6eb1f92f582f5d82a83.png)
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2023-12-19更新
|
341次组卷
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22卷引用:江苏省淮安市淮安区2023-2024学年八年级上学期期中数学试题
江苏省淮安市淮安区2023-2024学年八年级上学期期中数学试题北师大版七年级数学下册 第四章三角形 检测卷(已下线)【南昌新东方】2020年7月九江同文中学初一下期末考试 14江苏省常州实验学校、田家炳中学两校联考2020-2021学年八年级上学期期中数学试题广东省深圳高级中学集团2018-2019学年七年级下学期期中数学试题江苏省盐城市盐都区第一共同体2021-2022学年八年级上学期第一次月考数学试题(已下线)江苏省泰州市姜堰区第四中学2022-2023学年八年级上学期数学独立作业9.13江苏省泰州市靖江市滨江学校2022-2023学年八年级上学期10月月考数学试题江西省南昌三中教育集团2022-2023学年八年级上学期期中考试数学试卷河南省漯河市郾城区2022-2023学年八年级上学期期中数学试题江苏省泰州市靖江市滨江学校2022-2023学年八年级上学期第一次测试数学试题(已下线)专题4.30 三角形全等作辅助线(过点作垂线)(专项练习)-2022-2023学年七年级数学下册基础知识专项讲练(北师大版)(已下线)第四章 三角形(单元测试)-2022-2023学年七年级数学下册同步精品课堂(北师大版)单元质量评价(二)湖南省邵阳市洞口县茶场管理区2023-2024学年八年级上学期第二次月考数学试题福建省莆田市南门学校2023-2024学年八年级上学期月考数学试题湖南省长沙市青竹湖湘一外国语学校2023-2024学年八年级上学期第三次月考数学试题(已下线)第04讲 直角三角形-【寒假自学课】2024年八年级数学寒假提升学与练(北师大版)河南省商丘市睢阳区2023-2024学年八年级上学期期中数学试题(已下线)专题1.20 三角形的证明(全章分层练习)(培优练)-2023-2024学年八年级数学下册基础知识专项突破讲与练(北师大版)河南省周口市西华县2023-2024学年八年级上学期10月月考数学试题黑龙江省哈尔滨市松雷中学2023-2024学年七年级下学期期中数学试题
5 . 如图,在
中,
,
,垂足分别为D、E,
、
交于点H,已知
,
,则
的长是_______ .
![](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/f913298f0fae9f55377a8deab9f099dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9cdd315c8c0508ad4ec16df1abb73ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070bc896d35495237fd65576e9b6f88e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/27/ecc586fb-64d1-4435-8bd3-f3cf17b46c45.png?resizew=121)
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2023-12-07更新
|
138次组卷
|
2卷引用:江苏省淮安市淮安区2023-2024学年八年级上学期期中数学试题
名校
6 . 如图,在平面直角坐标系中,
,
,连接
,过点
作
.若
,
轴上的一点
,连接
,当点
在
轴上移动时,
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/109a293cef44f23e86e22c1a4cfcbbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d48001aa635215e2be1eed43a572621a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1cf8af6e62058cc4e2d83d5da7f4c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/8fce5842-82df-4443-b0a8-9e7ce64ccf5f.png?resizew=133)
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2023-12-05更新
|
88次组卷
|
5卷引用:江苏省淮安市淮安区淮安曙光双语实验学校2023-2024学年八年级上学期期中数学试题
7 . 在平面直角坐标系
中,已知点
,点B在y轴的正半轴上,且
,以
为斜边向下作等腰直角三角形
,则点C坐标是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e357eebd36c7985f6624b016be0edff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3abef063e1692494fd4769d100f044b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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8 . 如图,
,
,
,则
的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37444a4da006d26dd252bee7c6cecf01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212bfbd5575772ca36d6fc3e7b246e49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/14/c1e017c8-231b-492d-bb20-ccaef3a2740c.png?resizew=166)
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9 . 如图,
,
,点
为射线
上的一个动点,分别以
,
为直角边,
为直角顶点,在
两侧作等腰
、等腰
,连接
交
于
点,当点
在射线
上移动时,
的长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50fe8d168d75ecc6bab8fa7a2d463c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f561a36cc4c9293d8a63ee4e1a7146b.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/21/f395389c-d509-4f5c-abe2-a7ed7e8e5ae8.png?resizew=121)
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2023-11-06更新
|
84次组卷
|
2卷引用:江苏省淮安市淮安区周恩来红军中学2023-2024学年八年级上学期10月月考数学试题
10 . 如图,在边长为
的正方形
中,点
,
分别是边
,
的中点,连接
,
,点
,
分别是
,
的中点,连接
,则
的长度为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
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2023-10-10更新
|
107次组卷
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3卷引用:江苏省淮安市2023-2024学年八年级下学期期中数学试题
江苏省淮安市2023-2024学年八年级下学期期中数学试题福建省泉州市泉州五中桥南校区2023-2024学年九年级上学期第一次月考数学试题(已下线)江苏省八年级下学期期中模拟01 (苏科版:数据的分析、认识概率,中心对称图形-平行四边形)-【帮课堂】2023-2024学年八年级数学下册同步学与练(苏科版)