名校
解题方法
1 . 如图,正方体
的棱长为1,E,F,G分别为
的中点,则下列说法正确的序号为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/f4445050-0ae4-4d14-852a-354b62e652d7.png?resizew=220)
①直线
与直线
所成角的正切值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
②直线
与平面
不平行
③点C与点G到平面
的距离相等
④平面
截正方体所得的截面面积为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4700efcb84c4027ce7a50af0d5212fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473ce0e22c4edc6ef768e0c12f59e483.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/f4445050-0ae4-4d14-852a-354b62e652d7.png?resizew=220)
①直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04777f3f4661fa1c08a1cc0dfb807c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04777f3f4661fa1c08a1cc0dfb807c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
③点C与点G到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
④平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4700efcb84c4027ce7a50af0d5212fc.png)
A.①④ | B.②③ | C.①③ | D.②④ |
您最近一年使用:0次
名校
2 . 如图,直线
平面
,垂足为
,正四面体
的棱长为2,
,
分别是直线
和平面
上的动点,且
,则下列判断:①点
到棱
中点
的距离的最大值为
;②正四面体
在平面
上的射影面积的最大值为
.其中正确的说法是.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/22/ad8a8194-89ed-4d80-800d-bd6ac7a87a8f.png?resizew=232)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9df740160690029ac1e730c85f20347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa145a3e4f18f784ddf4869e0bf904c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f190b17530d81d927c358ac84757a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/22/ad8a8194-89ed-4d80-800d-bd6ac7a87a8f.png?resizew=232)
A.①②都正确 | B.①②都错误 | C.①正确,②错误 | D.①错误,②正确 |
您最近一年使用:0次
2020-05-21更新
|
485次组卷
|
2卷引用:2020届上海市黄浦区高三二模(阶段性调研)数学试题
解题方法
3 . 如图,在棱长为2的正方体
中,点M在线段
(不包含端点)上运动,则下列4个命题中所有正确命题的序号为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/14/d650b741-bd5e-4d45-8d28-b0924590a947.png?resizew=167)
①异面直线
与
所成角的取值范围是
;
②
;
③三棱锥
的体积为定值
;
④
的最小值为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/14/d650b741-bd5e-4d45-8d28-b0924590a947.png?resizew=167)
①异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9399c9a2a31b0e3165aea2d6ccc4f7c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bc08d14fe6bc48674b8c3b2d464fc88.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99ba3d4adb389c1d4ae5b742372440d5.png)
③三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6557d0725272b008c5969c0a203aa10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82aeb9ae6660cf9bd7b2f57ff4a47ef4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfba144ad36e04d7032e30b08413cda3.png)
A.②④ | B.①④ | C.②③④ | D.①③ |
您最近一年使用:0次
解题方法
4 . 已知三棱锥
中,
,
,
,
.关于该三棱锥有以下结论:①三棱锥
的表面积为
;②三棱锥
的内切球的半径
;③点
到平面
的距离为
;④若侧面
内的动点
到平面
的距离为
,且
,则动点
的轨迹为抛物线的一部分.其中正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a9b8e7befcb7881c294070175b1a554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d00c750e915d7f9a7460970a4199071f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9641d01140939c44450bf39773272af6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa37aefb6d45efe4e20ba48c2e7dfa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2c966fa765420ae547f83e28dcc997a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/266e095e1f7a31646992a5b7fac251d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.①② | B.③④ | C.① ②③ | D.①②③④ |
您最近一年使用:0次
名校
5 . 用一个平面去截正方体,则截面的形状可以是:①直角三角形,②正五边形,③正六边形,④梯形.正确结论的序号为( )
A.①②③ | B.②③ | C.③④ | D.②③④ |
您最近一年使用:0次
名校
解题方法
6 . 如图,在正方体
中,
平面
,垂足为H,给出下面结论:
①直线
与该正方体各棱所成角相等;
②直线
与该正方体各面所成角相等;
③过直线
的平面截该正方体所得截面为平行四边形;
④垂直于直线
的平面截该正方体,所得截面可能为五边形,
其中正确结论的序号为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/f273f891-1c29-4e16-9c35-25e72659af85.png?resizew=166)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71099c1ea5134061a9261b07c40e2e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d70675215ce4afa6a7d134fc073cd91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae7f4612c548b1f72a964ddb291cd2e.png)
①直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8a295e9474afc5e3628832bd3724f1.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8a295e9474afc5e3628832bd3724f1.png)
③过直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8a295e9474afc5e3628832bd3724f1.png)
④垂直于直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8a295e9474afc5e3628832bd3724f1.png)
其中正确结论的序号为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/f273f891-1c29-4e16-9c35-25e72659af85.png?resizew=166)
A.①③ | B.②④ | C.①②④ | D.①②③ |
您最近一年使用:0次
2019-01-15更新
|
792次组卷
|
2卷引用:【市级联考】山西省太原市2018-2019学年高二上学期期中考试数学试题
解题方法
7 . 如图,在矩形
中,已知
为边
的中点.将
沿
翻折成
,若
为线段
的中点,给出下列说法:①翻折到某个位置,可以使得
平面
;②无论怎样翻折,点
总在某个球面上运动.则( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36711ad74b021f54aead173d0f921a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa2a83fed9bf4cb09d84a980452e346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657dffbd3623b705f871878fbd9df57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.①和②都正确 | B.①和②都错误 |
C.①正确,②错误 | D.①错误,②正确 |
您最近一年使用:0次
2023-11-14更新
|
239次组卷
|
5卷引用:上海市金山区上海师范大学第二附属中学2023-2024学年高二上学期期中数学试题
上海市金山区上海师范大学第二附属中学2023-2024学年高二上学期期中数学试题上海市宝山区上海师大附属罗店中学2023-2024学年高二上学期第二次诊断调研数学试题(已下线)第三章 折叠、旋转与展开 专题三 球与翻折 微点3 球与翻折综合训练陕西省商洛市柞水中学2024届高考仿真模拟考试数学(理科)试题陕西省柞水中学2024届高考仿真模拟考试数学(文科)试题
解题方法
8 . 有一个圆锥形铅锤,其底面直径为
,母线长为
.P是铅锤底面圆周上一点,则关于下列命题:①铅锤的侧面积为
;②一只蚂蚁从P点出发沿铅锤侧面爬行一周、最终又回到P点的最短路径的长度为
.其中正确的判断是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/22/0377a6a9-7db4-45c3-849f-954a7079b7d8.png?resizew=90)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78d0ab561d0c9bb9099772c596af8bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976260cbf5e30856d4fd37a4b0a671a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eacd5be04f6142589c5490cc5483c5cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6533a2207c18662d05c4a5996042789e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/22/0377a6a9-7db4-45c3-849f-954a7079b7d8.png?resizew=90)
A.①②都正确 | B.①正确、②错误 |
C.①错误、②正确 | D.①②都错误 |
您最近一年使用:0次
2023-05-22更新
|
362次组卷
|
2卷引用:新疆维吾尔自治区阿勒泰地区2023届高三三模数学(文)试题
名校
9 . 有一个四锥形铅垂,其底面直径为10cm,母线长为15cm.P是铅垂底面圆周上一点,则关于下列命题:①铅垂的侧面积为
;②一只蚂蚁从P点出发沿铅垂侧面爬行一周、最终又回到P点的最短路径的长度为
cm,其中正确的判断是( )
![](https://img.xkw.com/dksih/QBM/2022/4/15/2958919622688768/2961645715333120/STEM/adbbcda2-d50a-4d11-b26e-ae200352c36f.png?resizew=129)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f0a3df0d2d0e5bb4f1811ff61ca3813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14fc6d812e0f2a7ff2b7bb4f4c92369d.png)
![](https://img.xkw.com/dksih/QBM/2022/4/15/2958919622688768/2961645715333120/STEM/adbbcda2-d50a-4d11-b26e-ae200352c36f.png?resizew=129)
A.①②都正确 | B.①错误、②正确 |
C.①正确、②错误 | D.①②都错误 |
您最近一年使用:0次
2022-04-19更新
|
600次组卷
|
2卷引用:河南省郑州市十校2021-2022学年高一下学期期中联考数学试题
名校
解题方法
10 . 有一个圆锥形铅垂,其底面直径为10cm,母线长为15cm.P是铅垂底面圆周上一点,则关于下列命题:①铅垂的侧面积为150cm2;②一只蚂蚁从P点出发沿铅垂侧面爬行一周、最终又回到P点的最短路径的长度为
cm.其中正确的判断是( )
![](https://img.xkw.com/dksih/QBM/2022/1/19/2897872790519808/2899176186249216/STEM/05f550a3-8e0f-476c-bc68-976af6082273.png?resizew=132)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14fc6d812e0f2a7ff2b7bb4f4c92369d.png)
![](https://img.xkw.com/dksih/QBM/2022/1/19/2897872790519808/2899176186249216/STEM/05f550a3-8e0f-476c-bc68-976af6082273.png?resizew=132)
A.①②都正确 | B.①正确、②错误 | C.①错误、②正确 |
您最近一年使用:0次