解题方法
1 . 在
中,
,点
是
的中点,记
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0cf3de61b5492989ae2002e19de770a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7b9d8a08fc52c31cc1a7f527d18b55c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f386f5b56b07b96f2600da1be15414a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9769839f35c2b7002b9f5e62f40b34de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3卷引用:山东省潍坊市2023届高三二模数学试题
名校
解题方法
2 . 下列说法正确的是( )
A.若![]() ![]() ![]() ![]() |
B.两个非零向量![]() ![]() ![]() ![]() ![]() |
C.已知![]() ![]() ![]() ![]() ![]() ![]() |
D.点![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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3 . 已知正方体
中,AB=2,P为正方体表面及内部一点,且
,其中
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc66c541fda45684978e92dd8654801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afe62a251f3d6dfb60ba2a42bdda534c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e54e229cadeac6ea81a965c18cb55b5d.png)
A.当![]() ![]() |
B.当![]() ![]() |
C.当![]() ![]() |
D.当![]() ![]() |
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解题方法
4 . 我国古代数学家赵爽所使用的“勾股圆方图”是由四个全等的直角三角形与中间的一个小正方形拼成的一个大正方形.如图①,是一个“勾股圆方图”,设
,
,
;在正方形EFGH中再作四个全等的直角三角形和一个小正方形IJKL,且
,如图②.若
,且
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/10/c8e4afef-059f-4264-b8fc-8241abe97aaa.png?resizew=326)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e199a6f2eca7434b32e237b9621f7ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24da8a9157aba7b24ffd77c749ac9169.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f51609d84e7bbfbb85641b843e897715.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8bad532ecb749fc201fe7d654069ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef9e1e927934f8ae7a2a60a18cfc763.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec13d0033bf630b096ce218c72c4d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96724b211bf3e56d588bd430aa3f2894.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/10/c8e4afef-059f-4264-b8fc-8241abe97aaa.png?resizew=326)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-04-08更新
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637次组卷
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5卷引用:山东省聊城市2023届高三第三次学业质量联合检测数学试题
山东省聊城市2023届高三第三次学业质量联合检测数学试题山东省聊城市2023届高三下学期期中数学试题(已下线)模块六 专题2 易错题目重组卷(山东卷)山西省山西大学附属中学校2023届高三下学期5月月考数学试题(已下线)模块六 专题4 全真能力模拟2
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5 . 在
中,
,
的平分线交BC于点D.若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9e507d3941363e9dbeac8be35134727.png)
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abbe207407b14cfea2662d9c51029110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9e507d3941363e9dbeac8be35134727.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59adb100c1a95619a62c5fd5a07aade1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89acc82cb747ff57569b0bcaf68f877d.png)
A.![]() | B.![]() | C.2 | D.3 |
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8卷引用:山东省淄博市2023届高三三模数学试题
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6 . 已知等腰直角三角形
中,
,
,
分别是边
,
的中点,若
,其中
,
为实数,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e930d844b960c77a678fa64f11964eb.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd49ba92f61b93e407d7f64c808e05c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c0d90dac211e58bc0d3309998ba232.png)
A.![]() | B.1 | C.2 | D.![]() |
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7 . 已知等边三角形
内接于
为线段
的中点,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/30/113522cf-c2ff-464c-8319-155d63f14d15.png?resizew=130)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e70b93e1bdc2a3191fc9b69b30969ba6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec33b8270e7493da5408ddc3e9848e2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/30/113522cf-c2ff-464c-8319-155d63f14d15.png?resizew=130)
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
8 . 已知
中,
的中点为
,点O是线段
三等分点(靠近点M),则向量
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2f2eb58d0e9f5d0621a3e340e1fb74.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2023-03-24更新
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712次组卷
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3卷引用:山东省德州市第一中学2022-2023学年高一下学期3月阶段性测试数学试题
9 . 如图所示,点
是平行四边形BCDE内(含边界)的一点,点B是AC的中点,
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/819920b7-bf28-400f-98c7-eb388b30a11e.png?resizew=207)
①当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
______ ;
②
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44dbb79b1d990d464f6ad9ed300519.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f568b52bd1da293266ce64844927be25.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/819920b7-bf28-400f-98c7-eb388b30a11e.png?resizew=207)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48fbc6d00babccf22755fce1ecc8ba7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059d6df06a5b85848dc4fa33327f8e07.png)
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2卷引用:山东省新高考联合质量测评2022-2023学年高一下学期3月联考数学试题
10 . 如图所示的矩形ABCD中,
,
,以
为圆心的圆与AC相切,
为圆上一点,且
,若
,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/19/8c68909e-5b53-4253-b562-3d3a095fa6c5.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2db85a267b12e404e3d3f20270d617f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9545017eee79a71befee621b52c8cae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1adebff9fb726cd58eda1ef994890901.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/19/8c68909e-5b53-4253-b562-3d3a095fa6c5.png?resizew=161)
A.![]() | B.![]() | C.![]() | D.![]() |
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4卷引用:山东省新高考联合质量测评2022-2023学年高一下学期3月联考数学试题
山东省新高考联合质量测评2022-2023学年高一下学期3月联考数学试题山东省滨州市阳信县第二高级中学实验中心2022-2023学年高一下学期第一次月考数学试题上海市宝安中学2022-2023学年高一下学期期中数学试题(已下线)专题05 平面向量基本定理-【寒假自学课】(苏教版2019)