1 . 如图,在正方体
中,
,
,
分别为
,
的中点,点
满足
,
,
.下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/00c78e98-7bfd-4fcb-83bb-f91c5c3eede0.png?resizew=159)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.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/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b1e5828ba34bfa9c839182baf52509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79296cd4046a71e163a8f3e647a176ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/994fe2e2ccff825adfe4567a84e0fd79.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/00c78e98-7bfd-4fcb-83bb-f91c5c3eede0.png?resizew=159)
A.若![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
解题方法
2 . 如图1,在直角梯形
中,
,
,
,
,
,
分别为
,
的中点.将直角梯形
沿
,
,
折起,使得
,
,
重合于点
,得到如图2所示的三棱锥
.
(1)证明:
.
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454ef60ed4e4233a949345cb848d8483.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1359ea39e0d3584a24b878a079e50a2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e173b1a57fc78a1dc2405275611e668.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e867e4fe4ee35b9098a39734c9737f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d803886ece8068dd12f174443bf01a0d.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/a4a949c00526fddf435423272cf10f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee51946da54ce4130fefa5e488589d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454ef60ed4e4233a949345cb848d8483.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/60ef95894ceebaf236170e8832dcf7e3.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/8/a659b85c-1eaf-4fbc-bedd-37f4ed9f2264.png?resizew=335)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfbad7ad1465d1c4c177e3321e6ed12a.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf4c26f3f4d96117f087400a0f32ece8.png)
您最近一年使用:0次
解题方法
3 . 已知正方体
的棱长为1,则以下结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
A.若![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.当点![]() ![]() ![]() ![]() |
D.若点![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
4 . 如图,在直三棱柱
中,
,
.
(1)求证:
;
(2)若
与平面
所成角的正弦值为
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8e9ec412ea0355e4e5cd06c60e5fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16cfb38323095090b0fe5eee70b24210.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/7/3e205b1c-8262-445a-bdcc-d21dc686629c.png?resizew=165)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e862713d078c4f06ec1f15ccd6f5a1f7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821309f088a175c00dc0f4828334503d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3205e4c6328a708c2f7f9bd40bf3762f.png)
您最近一年使用:0次
5 . 已知三棱锥
的所有棱长都为1,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9bbc7e0de28c652ae10a8db5b4e2687.png)
A.三棱锥![]() ![]() | B.三棱锥![]() ![]() |
C.二面角![]() ![]() | D.三棱锥![]() ![]() |
您最近一年使用:0次
名校
解题方法
6 . 如图,在正方体
中,
为
的中点( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/20/8c8f7e77-7ebf-455e-abed-af395e505003.png?resizew=153)
A.![]() ![]() ![]() |
B.![]() |
C.若正方体的棱长为1,则点![]() ![]() ![]() |
D.直线![]() ![]() ![]() |
您最近一年使用:0次
2023-08-19更新
|
1049次组卷
|
5卷引用:河北省石家庄二十七中2023-2024学年高二上学期开学考数学试题
2021·上海浦东新·三模
名校
解题方法
7 . 如图,已知四棱锥
中,底面
是边长为2的正方形,
平面
,
,
是
的中点.
(1)证明:
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/17/ee9e335c-62ac-413b-87f7-016572742eb7.png?resizew=168)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40c1a03f93b56a1fb0b57d20d53b4323.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53bdef2e7a7929ad6190302ab44c46c0.png)
您最近一年使用:0次
2023-08-16更新
|
598次组卷
|
7卷引用:河北省石家庄二十七中2023-2024学年高二上学期开学考数学试题
河北省石家庄二十七中2023-2024学年高二上学期开学考数学试题(已下线)重难点01 空间角度和距离五种解题方法-【满分全攻略】2022-2023学年高二数学下学期核心考点+重难点讲练与测试(沪教版2020选修一+选修二)(已下线)专题05异面直线间的距离(1个知识点4种题型1种高考考法)-【倍速学习法】2023-2024学年高二数学核心知识点与常见题型通关讲解练(沪教版2020必修第三册)(已下线)专题07锥体(6个知识点9种题型1种高考考法)-【倍速学习法】2023-2024学年高二数学核心知识点与常见题型通关讲解练(沪教版2020必修第三册)(已下线)上海市华东师范大学第二附属中学2021届高三三模数学试题(已下线)考向23 点、直线、平面之间的位置关系-备战2022年高考数学一轮复习考点微专题(上海专用)(已下线)专题突破卷19传统方法求夹角及距离-2
8 . 如图所示,正方体
的棱长为1,线段
上有两个动点
,
,且
,则下列说法中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/22/a62ca934-59ac-49ed-a374-4834826bd4b6.png?resizew=171)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.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/4901a7eda97d6a307db76c4fb196ba3d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/22/a62ca934-59ac-49ed-a374-4834826bd4b6.png?resizew=171)
A.存在点![]() ![]() ![]() |
B.异面直线![]() ![]() |
C.三棱锥![]() ![]() |
D.点![]() ![]() ![]() |
您最近一年使用:0次
2023-01-20更新
|
786次组卷
|
3卷引用:河北师范大学附属中学2023-2024学年高二上学期开学考数学试题
解题方法
9 . 点
分别是正方体
的棱
的中点,如图所示,则下列选项中正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/16/caa6071a-9f32-4b39-b702-8c4313f1576b.png?resizew=168)
①以正方体的顶点为顶点的三棱锥的四个面中最多只有三个面是直角三角形;
②过点
的截面是正方形;
③点
在直线
上运动时,总有
;
④点
在直线
上运动时,三棱锥
的体积是定值;
⑤点
是正方体的面
内的到点
和
的距离相等的点,则点
的轨迹是一条线段.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a79397b12006710d02e2f1f96fb0c972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c684eda8a9425958c878d7ccf2ece3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/16/caa6071a-9f32-4b39-b702-8c4313f1576b.png?resizew=168)
①以正方体的顶点为顶点的三棱锥的四个面中最多只有三个面是直角三角形;
②过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6692d72a790b62622956fd09aa0e0139.png)
③点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e32cf73c01995c91c3523fa11b3bd7d.png)
④点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d8b73e5f21858fd4caabf9c086d0bbb.png)
⑤点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.①③ | B.③④ | C.②⑤ | D.③⑤ |
您最近一年使用:0次
解题方法
10 . 如图,菱形
中,
,
,
为
上一点,满足
,将菱形沿
对折,形成四面体
,满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/28/cbac913e-1fbd-44d0-b009-cac65bb07b26.png?resizew=346)
(1)设折叠前
的面积为
,折叠后的面积为
,求
的值;
(2)求三棱锥
的体积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13c772461aef1d9d715129636739748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9244463ccb95a97d1282e427d54886e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3931333820859378ea6723ff3075189.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/28/cbac913e-1fbd-44d0-b009-cac65bb07b26.png?resizew=346)
(1)设折叠前
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c771a4feb150ad9cff8d70431c97eb17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52753d89bf58589e2e83b19bd3d140b8.png)
您最近一年使用:0次
2022-07-15更新
|
498次组卷
|
6卷引用:河北省衡水市阳光中学2022-2023学年高二上学期开学考试数学试题
河北省衡水市阳光中学2022-2023学年高二上学期开学考试数学试题贵州省遵义市2021-2022学年高二下学期期末质量监测数学(文)试题(已下线)8.3.1棱柱、棱锥、棱台的表面积和体积(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)8.3.1 棱柱、棱锥、棱台的表面积和体积(2)-2022-2023学年高一数学《考点·题型·技巧》精讲与精练高分突破系列(人教A版2019必修第二册)(已下线)立体几何专题:折叠问题中的证明与计算5种题型(已下线)微专题12 轻松搞定空间几何体的体积问题(2)