名校
解题方法
1 . 已知正四面体的棱长为2,则其外接球的表面积为( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-03-28更新
|
1734次组卷
|
4卷引用:贵州师范大学附属中学2021-2022学年高二下学期开学考试数学(理)试题
贵州师范大学附属中学2021-2022学年高二下学期开学考试数学(理)试题(已下线)专题20 玩转外接球、内切球、棱切球-1天津市南开区2022-2023学年高一下学期6月阶段性质量检测(期末)数学试题(已下线)专题03 空间几何体的体积、表面积及空间角-《期末真题分类汇编》(天津专用)
名校
解题方法
2 . 在三棱锥
中,
为正三角形,
,
,E为AB的中点,F为PC的中点,
,
,则三棱锥
外接球的表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab2c27eac56fffa4cd7dbe1dcdf1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533205f32369f31adfeba25dfd422955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2899e607479d8d1c47d954ae9ebb7144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-03-22更新
|
974次组卷
|
4卷引用:贵州省铜仁第一中学2023-2024学年高二上学期8月摸底衔接质量检测(二)数学试题
贵州省铜仁第一中学2023-2024学年高二上学期8月摸底衔接质量检测(二)数学试题湘赣皖长郡十五校2022届高三下学期第一次联考理科数学试题(全国乙卷)江西省南昌市第二中学等十五所名校2022届高三下学期第一次模拟考数学(理)试题(已下线)查补易混易错点06 立体几何-【查漏补缺】2022年高考数学(理)三轮冲刺过关
3 . 如图所示,在正方体
中,点E是棱
上的一个动点,平面
交棱
于点F.给出下列四个结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/6f702186-b712-45ce-ba19-f2420cf26070.png?resizew=185)
①存在点E,使得
//平面
;
②存在点E,使得
⊥平面
;
③对于任意的点E,平面
⊥平面
④对于任意的点E,四棱锥
的体积均不变
其中,所有正确结论的序号是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a83c0b8db2205a6815811aa4ff5390f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/6f702186-b712-45ce-ba19-f2420cf26070.png?resizew=185)
①存在点E,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6069dc466eec75bbeb3d5c9b51cb3a70.png)
②存在点E,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cdc08e1c4a04a18d5ecea03393e36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6069dc466eec75bbeb3d5c9b51cb3a70.png)
③对于任意的点E,平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a52848aff08399a36f217356007a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6069dc466eec75bbeb3d5c9b51cb3a70.png)
④对于任意的点E,四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b492d99c54c1d881aa0532d918c19389.png)
其中,所有正确结论的序号是
您最近一年使用:0次
2021-02-05更新
|
281次组卷
|
13卷引用:贵州省铜仁市第一中学2017-2018学年高二下学期开学考试数学(理)试题
贵州省铜仁市第一中学2017-2018学年高二下学期开学考试数学(理)试题(已下线)2013-2014学年北京海淀区高二上学期期末考试文科数学试卷【全国百强校】山西大学附属中学2018-2019学年高二10月模块诊断数学试题江西省吉安市几所重点中学2018-2019学年高二上学期联考数学(理)试题重庆市渝北区松树桥中学校2019-2020学年高二上学期第一次段考考数学试题四川省射洪市射洪中学校(英才班)2019—2020学年高二上期期末数学(文)试题四川省射洪市射洪中学(英才班)2019—2020学年高二上期期末数学(理)试题(已下线)【全国百强校】河北省衡水中学2019届高三上学期五调考试数学(文)试题【全国百强校】山东省聊城市第一中学2019届高三上学期期中考试数学(理)试题湖北省武汉市第二中学2018-2019学年高一下学期期末数学(理)试题(已下线)专题25 立体几何中的最值,探索性问题-冲刺2020高考跳出题海之高三数学模拟试题精中选萃江西省兴国县第三中学2021届高三上学期第四次月考数学(理)试题陕西省西安市长安区第一中学2021-2022学年高一下学期期末数学试题
名校
4 . 如图,在直角梯形
中,
,
,
为
的中点,将
沿
折起到
的位置,使得
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/e83016c5-d719-4e40-87e6-312be761af13.png?resizew=269)
(1)求证:
;
(2)求平面
与平面
所成的角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af260e0d98c95d1e092dc4c6d348e3ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be4250b66544361de6669b815348400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc4b17ce6e90cd3810a3696262e94c1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417fce75a36a97dd1c75e04b73c7185e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd8cd84a953da26f46a67557b649be86.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/e83016c5-d719-4e40-87e6-312be761af13.png?resizew=269)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c1f4ea8cd4a445dfdbc4690f7df3ebd.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f06c4f981c5da9e892ff75d7576efae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2020-03-19更新
|
142次组卷
|
2卷引用:贵州省凯里市第一中学2019-2020学年高二上学期开学考试数学试题
名校
解题方法
5 . 如图,在直角梯形
中,
,
,
为
的中点,将
沿
折起到
的位置,使得
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/e5aec468-6b78-4623-a693-b9fdc98535ce.png?resizew=312)
(1)求证:
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af260e0d98c95d1e092dc4c6d348e3ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be4250b66544361de6669b815348400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc4b17ce6e90cd3810a3696262e94c1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417fce75a36a97dd1c75e04b73c7185e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd8cd84a953da26f46a67557b649be86.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/e5aec468-6b78-4623-a693-b9fdc98535ce.png?resizew=312)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c1f4ea8cd4a445dfdbc4690f7df3ebd.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ba7c1596623c6d421b22dd107edbd6e.png)
您最近一年使用:0次
6 . 如图,已知在直四棱柱
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/7d6f597c-faf2-42a3-9868-795587c7b41a.png?resizew=173)
(1)求证:
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0e5697eca3f5205cb7b343648240bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d31600cba2d5256c7e78b6122d6755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280011846e091743c4fc6b6ed1c698f4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/7d6f597c-faf2-42a3-9868-795587c7b41a.png?resizew=173)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c5ae16a7145a28a91d45ef950a07c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f96c673a2381f118ea2d3efc0bca1f3.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73845d4d663b3de0b281611fe2c762fe.png)
您最近一年使用:0次
名校
7 . 如图,
,平面ABC外有一点
,点P到角的两边AC,BC的距离都等于
,则PC与平面ABC所成角的正切值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d81d732204a3c2384a27606f858677.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f742da39a47389b3b390c0971f0eee02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dffc7d0a7c658b991af37443186b4e9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/71db65d6-1ec0-4505-88d5-286269fd1fb8.png?resizew=164)
您最近一年使用:0次
2019-09-07更新
|
387次组卷
|
2卷引用:贵州省铜仁市第一中学2019-2020学年高二上学期入学考试数学(文)试题
8 . 如图,已知在直四棱柱
中,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8685f5b5ff947449a3123d041ad4f753.png)
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/23f635d0-54ec-49b9-891a-96aeefbe89d0.png?resizew=139)
(1)求证:
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0e5697eca3f5205cb7b343648240bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d31600cba2d5256c7e78b6122d6755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8685f5b5ff947449a3123d041ad4f753.png)
![](https://img.xkw.com/dksih/QBM/2019/8/29/2279310068776960/2285598993227776/STEM/9e342431857143c59a43132943c59152.png?resizew=25)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/23f635d0-54ec-49b9-891a-96aeefbe89d0.png?resizew=139)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c5ae16a7145a28a91d45ef950a07c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f96c673a2381f118ea2d3efc0bca1f3.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98e0254c84e44728749b34c08c28ab1e.png)
您最近一年使用:0次
名校
9 . 如图,在正方体
中,M, N分别为棱
的中点,以下四个结论:①直线DM与
是相交直线;②直线AM与NB是平行直线;③直线BN与
是异面直线;④直线AM与
是异面直线.其中正确的个数为
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/f9a00e99-2dbf-404d-8f65-aa95b244c1f3.png?resizew=157)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b3da308c73188350fb0f836952beea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b99738c0ba6ad5af08c609bd57fbc015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/f9a00e99-2dbf-404d-8f65-aa95b244c1f3.png?resizew=157)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
2019-09-07更新
|
1397次组卷
|
6卷引用:贵州省铜仁市第一中学2019-2020学年高二上学期入学考试数学试题(理)
名校
解题方法
10 . 在正方体
中
为底面
的中心,
为
的中点, 则异面直线
与
所成角的正弦值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e97fcdcfd6183b976a61ef3222c607.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0226b9a9fd4d0647e4f759c07de9aaad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90c780dac29ff8b7df5881d3b33abab.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-07-16更新
|
727次组卷
|
5卷引用:贵州省凯里市第一中学2019-2020学年高二上学期开学考试数学试题