名校
1 . 奔驰定理是一个关于三角形的几何定理,它的图形形状和奔驰轿车logo相似,因此得名.如图,P是
内的任意一点,角A,B,C所对的边分别为a,b,c,总有优美等式:
.
的内心,
,延长AP交BC于点D,求
;
(2)若P是锐角
的外心,
,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6304b350f56f7ee6a0c51d9ece5ee7db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64edb981d2bd90d1dc58e9d140d3903d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/219679f2c28a0418f62d9861b7aec02f.png)
(2)若P是锐角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2264c134952d41fb9bcb90e6c72c83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/568c6a1484da196de32bd04994d9d3d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
您最近一年使用:0次
今日更新
|
452次组卷
|
4卷引用:河南省南阳市第一中学校2023-2024学年高一下学期5月月考数学试题
名校
解题方法
2 . 在平行四边形
中,
为
的中点,设
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7b9d8a08fc52c31cc1a7f527d18b55c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea63f561d2d018ddb7c2ab3790f9da5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89791b8d677a17b179d6f265b84fcce.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
3 . 如图所示,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f287a213e656c175807a50b9e06b9e1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc1f481e946fb1908a32df820486eee9.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
昨日更新
|
640次组卷
|
4卷引用:河南省创新发展联盟2023-2024学年高一下学期第三次月考(5月)数学试题
名校
解题方法
4 . 已知向量
,
的夹角为
,
,
,在
中,
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0211da37e92f915e781691296578ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7958a6bddd1d578bbd6fbcb92e3f6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2396cac4b185cf1f1a67dad9248481c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72931604cf23d047739ecac18c7c4818.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea026ecfbee4f9255b8cdaad3579d89a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a431c7044c63fc06428d1dcd01d45f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa8ee982bb2eb1e2b24bef44f1b8d31.png)
A.2 | B.![]() | C.![]() | D.6 |
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解题方法
5 . 如图,已知
是边长为2的正三角形,点
、
、
是
边的四等分点.
的值;
(2)若
为线段
上的动点,求
的最小值,并指出当
取最小值时点
的位置.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797e67927616b141ed7c6b83f8b6f4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822fcf0c42e4c2ec7483766400964897.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af60dbda52ecc12748d1dab69b156be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab7aaa871ceb78e5b80b531a7cf4f1c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab7aaa871ceb78e5b80b531a7cf4f1c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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6 . (1)求证:
;
(2)已知在
中,
是
的中点,证明:
;
(3)已知
,
,且
与
不共线,当
为何值时,向量
与
互相垂直?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2052b9d309f07cf3b9544f09a2223b71.png)
(2)已知在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e1a5884f5abdf9d72561b7a591eda65.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6316d995f00623f05fc3d56a6cbe5f00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/407538138dd68ab917925c2063cc98e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9441846da0868582298cece138bec3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff01c3e3b53271c5d16ad4e02a930ad.png)
您最近一年使用:0次
名校
解题方法
7 . 如图,在
中,
是
的中点,D是线段
上靠近点
的四等分点,设
,
.
长为2,
长为8,
,求
的长;
(2)若
是
上一点,且
,试判断
三点是否共线?并说明你的理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14390e9b6b44472bdc7a131133ab39b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cd14dfc0024459f9d8e594c95c5106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc790cfaa59a808c25a7edb95dc29fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ee1ea509875a6ce53b37e5e25d0ed2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb4817f6d025306bfcba653b4e8d4dc6.png)
您最近一年使用:0次
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8 . 在平行四边形
中,
.
与
交于点
,求
的值;
(2)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df564ee0db41b0fed5ef3a55ca6afca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ec23e95587315d0e7d21a4794007045.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9869a996cf7a683bc596a4286c8dc4da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f29d5f376c75c41ae6af0c8a8565449.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6b86735572c3e9cee5e60e749b3bb3.png)
您最近一年使用:0次
2024-05-08更新
|
929次组卷
|
4卷引用:河南省驻马店市新蔡县新蔡县第一高级中学2023-2024学年高一下学期5月月考数学试题
河南省驻马店市新蔡县新蔡县第一高级中学2023-2024学年高一下学期5月月考数学试题辽宁省本溪市县级重点高中协作体2023-2024学年高一下学期期中考试数学试卷(已下线)专题03 向量的数量积-期末考点大串讲(人教B版2019必修第三册)湖北省黄冈市浠水县第一中学2023-2024学年高一下学期期末质量检测数学试题
解题方法
9 . 已知
是平面内的一组基底,则下列向量中能作为一组基底的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10814bc3db929e79874befe96cf4e3d4.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
名校
10 . 如图所示,在
中,点O是BC的中点,过点O的直线分别交直线AB、AC于不同的两点M、N,若
,
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328e8ec9120d4f382d63802421770a14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a10a8252aaca38bed5ab3657e4c122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd93ee03569849295ebde055410d1b84.png)
A.5 | B.9 | C.![]() | D.![]() |
您最近一年使用:0次
2024-05-04更新
|
691次组卷
|
5卷引用:河南省驻马店市新蔡县新蔡县第一高级中学2023-2024学年高一下学期5月月考数学试题