1 . 欧拉线定理指出三角形的外心、垂心、重心都在同一条直线士,且重心与外心之间的距离是重心与垂心之间的距离的一半.设
分别是
的外心、垂心和重心,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/142ed63468aef6c032805e94f17fe33b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
2 . 已知等边
的边长为2,
,
,
交
于
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff400c098ae6bf6abd24651a5a21114e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8eeca31b6ec56f02c3ca7969e098aa6.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/ac047e91852b91af639feec23a9598b2.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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3 . 如图,在平面斜坐标系
中,
,平面上任一点
的斜坐标定义为:若
(
为与
轴、
轴同方向单位向量),则点
的斜坐标为
.若在该斜坐标系中,
,
,则
为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6091495f40b421fde1b167814e6674d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5253a9a71037d60059b60237824193b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10814bc3db929e79874befe96cf4e3d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d9aa1d34d66a6876aa0566c8fc8b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5685e364dec31be0e5d6973e5b56efcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d23dbda2563059789698f0219387900.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f22de2383a103b4481e8b4669caddc4.png)
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4 . 在矩形
中,E,F分别为BC,CD的中点,若
(m,
),则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1930289026d38536dbddf820e5663d46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3276b5e12396fc4753eb3f8254f9fa68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32043a653eba02c79ae6395b3bcb34f.png)
A.1 | B.2 | C.![]() | D.![]() |
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5 . 下列命题错误的是( )
A.若向量![]() ![]() ![]() ![]() ![]() ![]() ![]() |
B.在![]() ![]() ![]() ![]() ![]() |
C.已知向量![]() ![]() ![]() ![]() ![]() |
D.平面向量![]() ![]() ![]() ![]() ![]() ![]() |
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6 . 如图,在梯形
中,
,
,
,
,
在线段
上.
,用向量
,
表示
,
;
(2)若AE与BD交于点F,
,
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c24a968c73e960698a572ab01e3698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](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/4148817c0a463417ec02769a7abc5913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304a7f07db2ec637baadf8f0ab91c85c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34bf00aeba15bce2cdee8ab487388dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d021a5c98388463d577675e58068aa7.png)
(2)若AE与BD交于点F,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1eb6b6ee8c74422693cc91262d54070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f673c9b0ad6537149f4d9b3b6d8c63c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7062eabb42603c793fef3a792a9191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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2024-05-23更新
|
387次组卷
|
3卷引用:吉林省名校联盟2023-2024学年高一下学期期中联合质量检测数学试题
名校
7 . 如图,在
中,
是
的中点,
在边
上,且
,
与
交于点
.
,
表示
;
(2)过点
作直线交线段
于点
,交线段
于点
,且
,
,求
的值;
(3)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833a1317d15bdad58ca21d3934a9a2b7.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa8c53645db602c72b00b599c2c0ff97.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f419bb9cfb8d103ac401b6a9688dd828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33917e8433b70eb15c4165f708ae1101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65bb363a04afbb6c4f7a40e665356e72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea79586df2029edb34c7cb2f67dc3722.png)
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解题方法
8 . 已知
,
是平面内两个不共线的向量,若
,
,
,且
、
、
三点共线.
(1)求实数
的值;
(2)若
,
.
(ⅰ)求
;
(ⅱ)若
,
,
,
,
恰好构成平行四边形
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0411792b587ddd3e04440392f011c224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95d660852c5226ff65a21cfb36b8b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2743ce4a6d6a7aa5cc912f7a65649f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef395ca3de9e8b37b9d5d7195f058ef8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8c70156c179b7c3250db28f7465af9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb66f1c51926ae8f6bcf741f991bc2db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e0a02dc6938610b3073c7bf270c9c61.png)
(ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89265cbe3abc6b966ce8967fead448b.png)
(ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/295b2af7cdb9923da9076af4efb99de1.png)
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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2024-05-04更新
|
466次组卷
|
3卷引用:吉林省长春市第二中学2023-2024学年高一下学期第二次学程考试(6月)数学试题
名校
9 . 如图,已知点
是
的重心,过点
作直线分别与
,
两边交于
,
两点,设
,
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9545f42dc3bb78dabdb73891f2e4a69c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301af152850e2c795bd385d0d10836f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/407e4330cfdd5cd0bcfd4f3bd1a898e6.png)
A.9 | B.4 | C.3 | D.![]() |
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2024-04-26更新
|
1072次组卷
|
7卷引用:吉林省白山市抚松县第一中学2023-2024学年高一下学期5月期中考试数学试题
吉林省白山市抚松县第一中学2023-2024学年高一下学期5月期中考试数学试题安徽省芜湖市安徽师范大学附属中学2023-2024学年高一下学期4月期中考试数学试题(已下线)模块五 专题3 全真能力测试1(苏教版期中研习高一)(已下线)核心考点1 平面向量的运算 B提升卷 (高一期末考试必考的10大核心考点 )(已下线)必考考点1 平面向量的运算 专题讲解(高一期末考试必考的10大核心考点 )河南省安阳市第一中学2023-2024学年高一下学期第二次阶段考试数学试题(已下线)专题3 以平面几何图形为背景的向量综合问题【练】(高一期末压轴专项)
名校
解题方法
10 . 如图,在
中,
为
上一点,且
,若
面积是
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bbaa015aaabca9398529b8d3530e389.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da18267294924c440b4a5e1d08dd928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6093eebca8f3ff82ce9298feb197e955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187634c24754b576ae8293665f45f89b.png)
A.![]() | B.![]() | C.4 | D.![]() |
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2024-04-19更新
|
743次组卷
|
7卷引用:吉林省长春市十一高中2023-2024学年高一下学期4月月考数学试题
吉林省长春市十一高中2023-2024学年高一下学期4月月考数学试题(已下线)高一 模块3 专题1 第1套 小题入门夯实练【人教B版】(已下线)高一 模块3 专题1 第1套 小题入门夯实练【北师大版】广东省汕头市潮阳一中明光学校2023-2024学年高一下学期5月月考数学试题(已下线)核心考点1 平面向量的运算 B提升卷 (高一期末考试必考的10大核心考点 )(已下线)专题2 以平面向量数量积为背景的最值与范围问题【练】(高一期末压轴专项)河北省邯郸市永年区第二中学2023-2024学年高二下学期6月月考数学试卷