名校
1 . 国家主席习近平指出:中国优秀传统文化有着丰富的哲学思想、人文精神、教化思想、道德理念等,可以为人们认识和改造世界提供有益启迪.我们要善于把弘扬优秀传统文化和发展现实文化有机统一起来,在继承中发展,在发展中继承.《九章算术》作为中国古代数学专著之一,在其“商功”篇内记载:“斜解立方,得两堑堵,斜解堑堵,其一为阳马,一为鳖臑”.刘徽注解为:“此术臑者,背节也,或曰半阳马,其形有似鳖肘,故以名云”. 鳖臑,是我国古代数学对四个面均为直角三角形的四面体的统称.在四面体
中,PA⊥平面ACB.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/58c3ca96-ee25-4cb8-8cc9-cb263cb93982.png?resizew=314)
(1)如图1,若D、E分别是PC、PB边的的中点,求证:DE
平面ABC;
(2)如图2,若
,垂足为C,且
,求直线PB与平面APC所成角的大小;
(3)如图2,若平面APC⊥平面BPC,求证:四面体
为鳖臑.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f44cc3030c28fdf4776b1a29c5df7c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/58c3ca96-ee25-4cb8-8cc9-cb263cb93982.png?resizew=314)
(1)如图1,若D、E分别是PC、PB边的的中点,求证:DE
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef336bafe4e08c983d0286c13182d81d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bf93402a48635572cbaadc2513ecd5.png)
(3)如图2,若平面APC⊥平面BPC,求证:四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f44cc3030c28fdf4776b1a29c5df7c.png)
您最近一年使用:0次
2022-10-20更新
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143次组卷
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2卷引用:新疆克孜勒苏柯尔克孜自治州第一中学2022-2023学年高二上学期期中数学试题
2 . 如图,已知
,
,
,
,
,
,
,
,
为空间的
个点,且
,
,
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/c218f69c-19d7-4217-91f4-52d1c4c21d19.png?resizew=144)
(1)求证:
,
,
,
四点共面,
,
,
,
四点共面;
(2)求证:平面
平面
;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/2a30f3a8b673cc28bd90c50cf1a35281.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/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d02ea8c4988c5c28ab93f0d70fb55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328f0c19f2d0b28b29a54a10753bce37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46352467c0c506859e0636a05a5a9cdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dba0b6b03c74f290ee9fc3dbb5a7546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ebef64fab4d6e546cbc2d1773c9d7ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec50b415b3aa3c411b644742c5d60a1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2c80c26a794a844127aae7dee87c93b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0baedc4d7e690ab3f7d80d30ba0a9efe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/c218f69c-19d7-4217-91f4-52d1c4c21d19.png?resizew=144)
(1)求证:
![](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/2a30f3a8b673cc28bd90c50cf1a35281.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/73465a1f9aa03481295bf6bd3c6903ac.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04de6e3d84ddf7da3dc4fab26e59df46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea384826175316e3c89f68abd8e2ee1.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c43715f5c90960325c62d91ee2d5bd.png)
您最近一年使用:0次
2021-12-10更新
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509次组卷
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7卷引用:新疆克孜勒苏柯尔克孜自治州第一中学2022-2023学年高二上学期期中数学试题
新疆克孜勒苏柯尔克孜自治州第一中学2022-2023学年高二上学期期中数学试题苏教版(2019) 选修第二册 名师精选 第六章 第一单元 空间向量及其运算、空间向量的坐标表示 B卷(已下线)1.1空间向量及其运算C卷(已下线)专题一 专题1 空间向量与立体几何(1)(高二苏教)(已下线)高二上学期期中复习【第一章 空间向量与立体几何】十大题型归纳(拔尖篇)-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)(已下线)模块二 专题1 利用空间向量对共线和共面问题的探究与应用 期末终极研习高二人教A版(已下线)3.1 空间向量及其运算(八大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
3 . 如图,直三棱柱
中,
,
,
,
,M是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/8ed5ab57-5651-4498-8625-441b84ee0891.png?resizew=147)
(1)请根据题设条件建立合适的空间直角坐标系,并求直线
的一个方向向量的坐标;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c279c8033acb94c3f91be2e05b0a6bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267880e605306851d8f46be77b11f9c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1192b3111a6dad01bba5227472bb4072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/8ed5ab57-5651-4498-8625-441b84ee0891.png?resizew=147)
(1)请根据题设条件建立合适的空间直角坐标系,并求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7d857811cbd619f868d951aa7a0ab8.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c7c9b452fba2c98370cd2cf692aceb.png)
您最近一年使用:0次
2022-04-20更新
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68次组卷
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2卷引用:新疆维吾尔自治区克孜勒苏柯尔克孜自治州阿克陶县2022-2023学年高二上学期期中数学试题
4 . 已知四边形
是边长为2的正方形,
是正三角形,平面
平面
,
为
中点.
![](https://img.xkw.com/dksih/QBM/2021/1/15/2636522101252096/2638738029150208/STEM/a8e5faee-3898-41a1-a805-e24eb68b5fe7.png?resizew=262)
(1)证明:
平面
;
(2)求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2021/1/15/2636522101252096/2638738029150208/STEM/a8e5faee-3898-41a1-a805-e24eb68b5fe7.png?resizew=262)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15b63176f43bc7a0654d0f6f45e7429.png)
您最近一年使用:0次
2021-01-18更新
|
232次组卷
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2卷引用:新疆克孜勒苏柯尔克孜自治州2023-2024学年高二上学期期末质量监测数学试题
20-21高一·全国·课后作业
名校
5 . 已知直线
,
.
(Ⅰ)若
,求
,
间的距离;
(Ⅱ)求证:直线
必过第三象限.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa9685e4bd5a21e215d6dc11f770303.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07cf55e34d47a3623ece37579794d70.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1095c036b49c3327baaa2c3c7f746134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(Ⅱ)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
您最近一年使用:0次
2021-04-19更新
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486次组卷
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7卷引用:新疆克孜勒苏柯尔克孜自治州第一中学2022-2023学年高二上学期期中数学试题
新疆克孜勒苏柯尔克孜自治州第一中学2022-2023学年高二上学期期中数学试题(已下线)专题10 点到直线的距离公式与两条平行直线间的距离 核心素养练习 -【新教材精创】2020-2021学年高二数学新教材知识讲学(人教A版选择性必修第一册)(已下线)1.5 平面上的距离-2021-2022学年高二数学链接教材精准变式练(苏教版2019选择性必修第一册)(已下线)1.5 平面上的距离(课堂培优)-2021-2022学年高二数学课后培优练(苏教版2019选择性必修第一册)(已下线)专题07 直线的交点坐标与距离公式 - 2021-2022高二上学期数学新教材配套提升训练(人教A版2019选择性必修第一册)(已下线)2.3.4两条平行直线的距离(备作业)-【上好课】2021-2022学年高二数学同步备课系列(人教A版2019选择性必修第一册)(已下线)3.3.4 两条平行直线间的距离-2020-2021学年高一数学课时同步练(人教A版必修2)
名校
6 . 如图,在三棱锥
中,底面
是等腰直角三角形,
,
,
,
分别为棱
,
,
的中点,且
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/de81ecdf-4a26-4e22-bf87-72e2c4544247.png?resizew=143)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f1300c053fde2be0861a4d128645dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d9ef979b9f27a28cbda6923e888ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c19f0fcacac715a1200770516d1e4a67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e0ee3db4954e8858303c2ef19307e8f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/de81ecdf-4a26-4e22-bf87-72e2c4544247.png?resizew=143)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
您最近一年使用:0次
2020-03-17更新
|
176次组卷
|
2卷引用:新疆克孜勒苏柯尔克孜自治州第一中学2022-2023学年高二上学期期中数学试题
7 . 如图,在四棱锥P-ABCD中,PA⊥底面ABCD,底面ABCD为直角梯形,AD∥BC,∠BAD=90°,PA=AD=AB=2BC=2,过AD的平面分别交PB,PC于M,N两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/f4eee7bf-7c31-4790-a599-ca68041cca92.png?resizew=161)
(1)求证:MN∥BC;
(2)若M,N分别为PB,PC的中点,
①求证:PB⊥DN;
②求二面角P-DN-A的余弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/f4eee7bf-7c31-4790-a599-ca68041cca92.png?resizew=161)
(1)求证:MN∥BC;
(2)若M,N分别为PB,PC的中点,
①求证:PB⊥DN;
②求二面角P-DN-A的余弦值.
您最近一年使用:0次
2018-10-11更新
|
538次组卷
|
3卷引用:新疆维吾尔自治区克孜勒苏柯尔克孜自治州阿克陶县2022-2023学年高二上学期期中数学试题
新疆维吾尔自治区克孜勒苏柯尔克孜自治州阿克陶县2022-2023学年高二上学期期中数学试题2018秋人教A版高中数学选修2-1习题:3.2.3利用向量求空间角(已下线)期中真题必刷压轴60题(18个考点专练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)