名校
解题方法
1 . 已知正方体
的棱长为
,
为棱
上的一点,且满足平面
平面
,则平面
截四面体
的外接球所得截面的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3547a914468b082d8d8741b974a03190.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 如图,直角梯形
中,
,
,
,
,将
沿
翻折至
的位置,使得
.
(1)求证:平面
平面
;
(2)若
,
分别为
,
的中点,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0d7095ddd69d6ceaf1065b1bc2c79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65d5853c26657db448af610ac72cca4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ac2e11788860424508ea9e80cf89d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3ea25ef38e4afa8f75ffd0842890289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/646e85f3bca49449292f7ee9cc650a6f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/1/157e276b-97b2-477f-8a63-f3325d1eff21.png?resizew=350)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe052786101dfcc941480919eb2cecc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb97aff0960e2640314888a38e7169c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f5ae2479250679806d07b7b0c9256bc.png)
您最近一年使用:0次
2023-05-29更新
|
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|
3卷引用:江西省九江市2023届高三上学期第一次模拟数学(文)试题
名校
解题方法
3 . 在空间直角坐标系中,已知
,则当点
到平面
的距离最小时,直线
与平面
所成角的正弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07667c40dd334df4a3e7f69d2c6c7aef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-05-29更新
|
850次组卷
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6卷引用:江西省稳派联考2023届高三模拟预测数学(理)试题
江西省稳派联考2023届高三模拟预测数学(理)试题河南省名校联考2023届高三下学期5月模拟理科数学试题(已下线)第七章 立体几何与空间向量 第六节 利用空间向量求空间角与距离(核心考点集训)山西大学附属中学校2023-2024学年高二上学期10月模块诊断数学试题(已下线)第05讲 空间向量及其应用(练习)(已下线)第4讲:立体几何中的最值问题【练】(清北二轮)
4 . 如图,在正三棱柱中,
为
上一点,
,
,
为
上一点,三棱锥
的体积为
.
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7b3e7c7845a0ec3cbac709fda131764.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a52848aff08399a36f217356007a4b.png)
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|
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5卷引用:江西省南昌市部分学校2023届高三模拟考前押题模拟预测数学(文)试题
江西省南昌市部分学校2023届高三模拟考前押题模拟预测数学(文)试题河南省郑州市九师联盟2023届高三考前押题卷文科数学试题河南省驻马店市2023届高三三模文科数学试题河南省开封市杞县等4地2022-2023学年高三下学期期末考试文科数学试题(已下线)8.6.3平面与平面垂直 (第2课时) -【上好课】(人教A版2019必修第二册)
5 . 如图,在四棱锥
中,
平面ABCD,底面ABCD是正方形,点E在棱PD上,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/29/a0e9b541-abea-401b-88ea-381412fbe164.png?resizew=178)
(1)证明:点E是PD的中点;
(2)求直线BE与平面ACE所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/137eebd1621a51cc5af32b373d983d2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5113ac6e656002f2d110f08ed753e9e0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/29/a0e9b541-abea-401b-88ea-381412fbe164.png?resizew=178)
(1)证明:点E是PD的中点;
(2)求直线BE与平面ACE所成角的余弦值.
您最近一年使用:0次
6 . 已知在长方体
中,
,点
,
,
分别在棱
,
和
上,且
,
,
,则平面
截长方体所得的截面形状为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bf131251b1d71469a433d27550f5787.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e1e942970446af51974f8f0d29ac49b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1639ac3ec110904b0fac039d98f6b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a92a0b703abc25b34b15944414f09aaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5402c2b7bb37dc8be6f0ca3ab82a8fd7.png)
A.三角形 | B.四边形 | C.五边形 | D.六边形 |
您最近一年使用:0次
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|
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7卷引用:江西省2023届高三高考适应性大练兵联考数学(理)试题
江西省2023届高三高考适应性大练兵联考数学(理)试题(已下线)第七章 立体几何与空间向量 第一节 第一课时 基本立体图形及表面积与体积(A素养养成卷)(已下线)考点1 特殊几何体的性质 2024届高考数学考点总动员【练】陕西省渭南市三贤中学2024届高三下学期名校学术联盟高考模拟信息卷押题卷文科数学试题(一)陕西省渭南市三贤中学2024届高三下学期名校学术联盟高考模拟信息卷押题卷理科数学试题(一)(已下线)专题7.1 基本立体图形、简单几何体的表面积与体积【八大题型】(已下线)专题08 几何体截面与展开最短距离归类(1) -期末考点大串讲(苏教版(2019))
7 . 已知某圆锥的底面半径为2,其体积与半径为1的球的体积相等,则该圆锥的母线长为( )
A.1 | B.2 | C.![]() | D.5 |
您最近一年使用:0次
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|
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5卷引用:江西省2023届高三高考适应性大练兵联考数学(理)试题
名校
8 . 在正四棱柱
中,O为
的中点,且点E既在平面
内,又在平面
内.
(1)证明:
;
(2)若
,
,E为AO的中点,E在底面ABCD内的射影为H,指出H所在的位置(需要说明理由),并求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7977ab975efa6411cc17de39be70d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/27/b5b5d8c7-01db-4427-95f6-f526bc242d3f.png?resizew=143)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06537cb9306dafa4c221cfced82a2ce4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8a295e9474afc5e3628832bd3724f1.png)
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2023-05-26更新
|
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|
3卷引用:江西省稳派联考2023届高三模拟预测数学(文)试题
名校
解题方法
9 . 在四棱锥
中,
底面ABCD,
,
,
,且二面角
为
,则四棱锥
的侧面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/599f5e0ad680e85e4a91965f643cc2e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b342a682cbd4241855a243da3c016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b796bbaeb8450404c2d146283562006e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
A.![]() | B.10 | C.![]() | D.11 |
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4卷引用:江西省稳派联考2023届高三模拟预测数学(文)试题
江西省稳派联考2023届高三模拟预测数学(文)试题河南省名校联考2023届高三5月最终模拟文科数学试题贵州省凯里市第一中学2023届高三模拟考试数学(文)试题(已下线)2023年高考全国甲卷数学(理)真题变式题11-15
名校
解题方法
10 . 在直三棱柱
中,E为棱
上一点,
,
,D为棱
上一点.
(1)若
,且D为
靠近B的三等分点,求证:平面
平面
;
(2)若△ABC为等边三角形,且三棱锥
的体积为
,求二面角
的正弦值的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62d95da5235c7fe783203d8f7c81b64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/28/f7ccf1dd-bc1a-48cf-954d-5f1e2a5138fc.png?resizew=130)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d89ba4036a5d18ec4abed44d7fd8e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7b3e7c7845a0ec3cbac709fda131764.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
(2)若△ABC为等边三角形,且三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86f0c01cdd682431365cf43dfba98bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18483c9c195ecd922772527fa85c0fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/920afebdfaec5c13216348a34ac4b03e.png)
您最近一年使用:0次
2023-05-26更新
|
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4卷引用:江西省南昌市部分学校2023届高三模拟考前押题模拟预测数学(理)试题