名校
解题方法
1 . 如图,在三棱柱
中,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/003a0482-7786-482a-bad0-7be4a847f472.png?resizew=172)
(1)记平面
与平面
的交线为l,求证:
平面
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252143a7b900d33862f60b2536f6a8ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d289a52b00154f78031af90afa02135.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/003a0482-7786-482a-bad0-7be4a847f472.png?resizew=172)
(1)记平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23976db53f05b3d5d791c4d736a7184d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47af45fbf1714055d9b414a44a8613fa.png)
您最近一年使用:0次
名校
解题方法
2 . 几何体
是四棱锥,
为正三角形,
,
,
为线段
的中点.
平面
;
(2)线段
上是否存在一点
,使得
四点共面?若存在,请求出
的值;若不存在,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ad8d16722f5b9e7fd2602f14d5ffbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b0382c28547d3834ca71f3f0677695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba8f7af0e091e082100c3cd7f8c487f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a814b70236a108be5d6e7ff271fe92.png)
(2)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9635120b0064caffba6d42091833d069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8136c029f4b31e25c56c70a1432cbe1a.png)
您最近一年使用:0次
2022-11-03更新
|
2645次组卷
|
15卷引用:黑龙江省哈尔滨市第十一中学校2022-2023学年高一下学期期末考试数学试题
黑龙江省哈尔滨市第十一中学校2022-2023学年高一下学期期末考试数学试题四川省峨眉第二中学校2022-2023学年高二上学期10月月考文科数学试题(已下线)重难点专题04 空间直线平面的平行-【同步题型讲义】江苏省无锡市锡东高级中学2022-2023学年高一下学期期中数学试题广东省珠海市2022-2023学年高一下学期期末数学试题四川省绵阳南山中学2022-2023学年高一下学期6月月考数学试题江西省峡江中学2022-2023学年高一下学期期末教学质量检测数学试题(甲卷)广东省珠海市广东实验中学金湾学校2022-2023学年高一下学期6月月考数学试题 江西省新余市第一中学2023-2024学年高二上学期开学考试数学试题山东省泰安市泰安一中新校区2022-2023学年高一下学期期中数学试题(已下线)第09讲 空间的平行关系-【寒假预科讲义】(人教A版2019必修第二册)(已下线)点线面之间的位置关系(已下线)【一题多变】四点共面 向量转化(已下线)专题04空间点、直线、平面的位置关系与空间直线、平面的平行-期末真题分类汇编(新高考专用)【人教A版(2019)】专题14立体几何与空间向量(第三部分)-高一下学期名校期末好题汇编
名校
解题方法
3 . 几何体
是四棱锥,
为正三角形,
,
,
为线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/c4f92b87-66db-461f-886d-891d1f5c9957.png?resizew=144)
(1)求证:
平面
;
(2)线段
上是否存在一点
,使得
四点共面?若存在,请找出点
,并证明;若不存在,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ad8d16722f5b9e7fd2602f14d5ffbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b0382c28547d3834ca71f3f0677695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/c4f92b87-66db-461f-886d-891d1f5c9957.png?resizew=144)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba8f7af0e091e082100c3cd7f8c487f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a814b70236a108be5d6e7ff271fe92.png)
(2)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9635120b0064caffba6d42091833d069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次
2022-11-03更新
|
975次组卷
|
4卷引用:黑龙江省哈尔滨市宾县第二中学2022-2023学年高三上学期期中考试数学试题
黑龙江省哈尔滨市宾县第二中学2022-2023学年高三上学期期中考试数学试题四川省峨眉第二中学校2022-2023学年高二上学期10月月考理科数学试题(已下线)8.5.3平面与平面平行(精练)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)(已下线)第26讲 空间直线、平面的平行的判定4种常见方法
名校
4 . 如图,四棱锥
中,
,
,E为线段
上一点,
平面
,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/fd6ef8b5-5408-402f-a78c-202aec78fc8f.png?resizew=185)
(1)求
;
(2)若三棱锥
的体积为
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26656da32636a67c6e3467c152b7e3ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/959bc700518b93b57366fd021c95d293.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c2b786c64e6a9ed2ec5670cde74f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e6dc2c16b657672402b9b189d1ad04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/fd6ef8b5-5408-402f-a78c-202aec78fc8f.png?resizew=185)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/add47889f6b4911133999a898d3666d3.png)
(2)若三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9906ec3e92ecdefb55d5b1d99a928e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324d453870b345da0c41977290192f94.png)
您最近一年使用:0次
名校
5 . 如图,在四棱锥
中,已知底面
是正方形,
底面
,且
是棱
上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/611853af-c7ef-4dcb-a433-d15c21266e57.png?resizew=142)
(1)若
平面
,证明:
是
的中点.
(2)线段
上是否存在点
,使二面角
的余弦值是
?若存在,求
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6be2b61f4a38e2ee2c1a01e00b3ae6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31a1d668da8b3e0333b95ce5843adf19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05ce408275a91a6e8c5f2a174265ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/611853af-c7ef-4dcb-a433-d15c21266e57.png?resizew=142)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826bf6fa3706921b77ad0eb4fcc206bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(2)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d71190e0bf7d159f025f927372ff9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63df78dd883e274ecf7d4017ef5efcdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/956adbca7e7f83d798de829ca03ac6e4.png)
您最近一年使用:0次
2022-10-19更新
|
1238次组卷
|
5卷引用:黑龙江省佳木斯市第八中学2023届高三下学期开学考试数学试题
名校
6 . 如图,在三棱柱
中,四边形
是边长为4的菱形,
,点D为棱
上动点(不与A,C重合),平面
与棱
交于点E.
![](https://img.xkw.com/dksih/QBM/2022/9/4/3059253486567424/3062120765620224/STEM/c477a849af1d4c23b0f337c28dd073cc.png?resizew=259)
(1)求证
;
(2)若平面
平面
,
,
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae617fbbfc82b69086f5184bd5cbca26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fefd737df2c1884834312b4c4f1a16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/2022/9/4/3059253486567424/3062120765620224/STEM/c477a849af1d4c23b0f337c28dd073cc.png?resizew=259)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/864576d97b4cc74d855f4252c63a68b9.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b67bd44e1d9d2739714f0b9cf3bc046.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e3c9e7c05de9838c0c5d762720d3ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea6d2a253bdcecb8608b4004ebd68c0.png)
您最近一年使用:0次
2022-09-08更新
|
1371次组卷
|
5卷引用:黑龙江省哈尔滨市宾县第二中学2022-2023学年高二上学期期中考试数学试题
名校
7 . 如图,AB是⊙O的直径,C,D是圆周上异于A、B且在直径AB同侧的点,
,
,P是平面ABC外一点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/2/33dddaf5-751f-4427-8329-ab00ed8327ad.png?resizew=171)
(1)设平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
平面
,求证:
;
(2)求PC与平面POD成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d28eb567698a9467890bfaebb49c248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce04330863f334de5c33adf1ed542215.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/2/33dddaf5-751f-4427-8329-ab00ed8327ad.png?resizew=171)
(1)设平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/337d7872b8fba3c243e3f3cc32b80582.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebae74545340ce6971f437d129e9c659.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66e07da86c28987e928f7410c2dcbd50.png)
(2)求PC与平面POD成角的正弦值.
您最近一年使用:0次
名校
解题方法
8 . 如图所示,四边形EFGH为四面体ABCD的一个截面,若四边形EFGH为平行四边形.
![](https://img.xkw.com/dksih/QBM/2023/8/13/3301867851661312/3324837547491328/STEM/ecc701d194e74a1fabaa33202017fc79.png?resizew=166)
(1)求证:
平面
;
(2)若
,
,求四边形
周长的取值范围.
![](https://img.xkw.com/dksih/QBM/2023/8/13/3301867851661312/3324837547491328/STEM/ecc701d194e74a1fabaa33202017fc79.png?resizew=166)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fdb2b9d6a4a54ed1328c5b3adcf7b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca7e1a727ba332984ad857b3d25344d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
您最近一年使用:0次
2023-09-14更新
|
851次组卷
|
16卷引用:黑龙江省牡丹江市第三高级中学2021-2022学年高三上学期第五次月考数学(文)试题
黑龙江省牡丹江市第三高级中学2021-2022学年高三上学期第五次月考数学(文)试题山西省朔州市怀仁市第一中学2019-2020学年高二上学期期中数学(理)试题陕西省咸阳市武功县普集高中2019-2020学年高一上学期第三次月考数学试题安徽省六安市第一中学2019-2020学年高一下学期期末数学(理)试题安徽省阜阳市太和第一中学2020-2021学年高二(奥赛班)上学期开学考试数学试题(已下线)2.2.1 直线与平面平行的判定-2020-2021学年高一数学课时同步练(人教A版必修2)陕西省西安市阎良区关山中学2020-2021学年高一上学期12月月考数学试题(已下线)第47讲 直线与平面、平面与平面平行(已下线)专题5 综合闯关(基础版)(已下线)8.5.2 直线与平面平行 (精讲)(2)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)第六章 立体几何初步 基础知识练习题——2021-2022学年高一下学期数学北师大版(2019)必修第二册湖南省长沙市实验中学2022-2023学年高一下学期期中数学试题(已下线)高一下学期期末真题精选(压轴60题20个考点专练)-【满分全攻略】2022-2023学年高一数学下学期核心考点+重难点讲练与测试(人教A版2019必修第二册)(已下线)第03讲 直线、平面平行的判定与性质(八大题型)(讲义)(已下线)第二章 立体几何中的计算 专题四 空间几何体截面问题 微点2 截面的分类(二)【培优版】(已下线)13.2.3 直线与平面的位置关系(1)-【帮课堂】(苏教版2019必修第二册)
9 . 如图,已知四棱锥P-ABCD的底面为矩形,AB=PD=2,
,O是AD的中点,PO⊥平面ABCD.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/164bd2e9-c74f-4d42-beb4-9cf1f1c9396c.png?resizew=274)
(1)求证:AC⊥平面POB;
(2)设平面PAB与平面PCD的交线为l.
①求证:
;
②求l与平面PAC所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c3ec174b1ce835cc8737ff6ce57e52.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/164bd2e9-c74f-4d42-beb4-9cf1f1c9396c.png?resizew=274)
(1)求证:AC⊥平面POB;
(2)设平面PAB与平面PCD的交线为l.
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778ba4674ac8501397aea09be7453ba3.png)
②求l与平面PAC所成角的大小.
您最近一年使用:0次
2022-07-13更新
|
860次组卷
|
6卷引用:黑龙江省哈尔滨市2022-2023学年高一下学期期末数学试题
名校
解题方法
10 . 平行四边形ABCD中,
,
,如图甲所示,作
于点E,将
沿着DE翻折,使点A与点P重合,如图乙所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/22/ff6f32a8-1ad4-4851-b013-3200acd67296.png?resizew=371)
(1)设平面PEB与平面PDC的交线为l,判断l与CD的位置关系,并证明;
(2)当四棱锥
的体积最大时,求二面角
的正切值;
(3)在(2)的条件下,G、H分别为棱DE,CD上的点,求空间四边形PGHB周长的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f80f51c31583fea58fde645474d60b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5595129319f9f5f069297ddb1455f97a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/22/ff6f32a8-1ad4-4851-b013-3200acd67296.png?resizew=371)
(1)设平面PEB与平面PDC的交线为l,判断l与CD的位置关系,并证明;
(2)当四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e98920101c174b991d7a8481707ab88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715cc9ea5e7d80930284ffb117142770.png)
(3)在(2)的条件下,G、H分别为棱DE,CD上的点,求空间四边形PGHB周长的最小值.
您最近一年使用:0次
2022-06-20更新
|
1445次组卷
|
5卷引用:黑龙江省鹤岗市第一中学2021-2022学年高一下学期期末考试数学试题