名校
1 . 在正三棱柱
中,
,点P满足
,其中
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af0e44cb429eea46e7ee4320147192b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac6b545127bd51036a5a7b0d3cd5b320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faf326510f76018d51105bb42c195ca3.png)
A.当![]() ![]() ![]() |
B.当![]() ![]() |
C.当![]() ![]() ![]() |
D.若![]() ![]() |
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2 . 将边长为4的正方形
沿对角线
折起,使点
不在平面
内,则下列命题是真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
A.不论二面角![]() ![]() |
B.当二面角![]() ![]() ![]() |
C.当二面角![]() ![]() ![]() |
D.不论二面角![]() ![]() ![]() |
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解题方法
3 . 如图,正四棱锥
每一个侧面都是边长为4的正三角形,若点M在四边形ABCD内(包含边界)运动,N为PD的中点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
A.当M为AD的中点时,异面直线MN与PC所成角为![]() |
B.当![]() ![]() |
C.当![]() ![]() |
D.存在一个体积为![]() ![]() |
您最近一年使用:0次
2024-04-10更新
|
616次组卷
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2卷引用:2024届贵州省贵阳市高三下学期适应性考试数学试题
名校
4 . 在三棱锥
中,
平面
,平面
内动点
的轨迹是集合
.已知
且
在棱
所在直线上,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2475013dd630bcaca9cf973b1b33bb4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2e6c25ed1f4f7ff11be527f620a39bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4c9d4cdb1290a0092e17e31deb4b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2451fdae3c590a4099e9ad91e5edea9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd74add83d098d62539e2d8234e2d7c.png)
A.动点![]() |
B.平面![]() ![]() |
C.三棱锥![]() |
D.三棱锥![]() |
您最近一年使用:0次
2024-03-03更新
|
1173次组卷
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7卷引用:贵州省贵阳市2024届高三下学期适应性考试数学试卷(一)
贵州省贵阳市2024届高三下学期适应性考试数学试卷(一)贵州省安顺市2024届高三下学期模拟考试(一)数学试卷(已下线)第四套 最新模拟重组卷湖南省长沙市湖南师范大学附属中学2024届高三下学期高考模拟(三)数学试卷(已下线)高三数学考前冲刺押题模拟卷01(2024新题型)(已下线)新高考预测卷(2024新试卷结构)(已下线)第三章 空间轨迹问题 专题六 立体几何轨迹中的范围、最值问题 微点1 立体几何轨迹中的范围、最值问题【培优版】
名校
5 . 如图,正方体
的棱长为1,
是线,段
上的动点,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
A.四面体![]() |
B.![]() ![]() |
C.![]() ![]() |
D.当直线![]() ![]() ![]() ![]() |
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解题方法
6 . 如图,菱形ABCD的边长为2,
.将
沿AC折到PAC的位置,连接PD得三棱锥
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/11/c95e7293-6fa1-4226-be20-3617db760663.png?resizew=151)
①若三棱锥
的体积为
,则
或3;
②若
平面PAC,则
;
③若M,N分别为AC,PD的中点,则
平面PAB;
④当
时,三棱锥
的外接球的体积为
.
其中所有正确结论的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284e282bb1d9fbf8634b3506ee5358ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c482ee1668a59ca21f3ae8b6bad58eae.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/11/c95e7293-6fa1-4226-be20-3617db760663.png?resizew=151)
①若三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c482ee1668a59ca21f3ae8b6bad58eae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71826134c3080aa75becc655a9089855.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5928c98b341b16d4b5a5b931d2929d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fcac3b256b269b824d8738bb081f8ad.png)
③若M,N分别为AC,PD的中点,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a459372aa54090fcce9430a3cfa182f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c482ee1668a59ca21f3ae8b6bad58eae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa093f8199b8afcb8b3d481a66ea65f7.png)
其中所有正确结论的序号是
您最近一年使用:0次
2023-05-09更新
|
929次组卷
|
4卷引用:贵州省毕节市2023届高三诊断性考试(三)数学(文)试题
贵州省毕节市2023届高三诊断性考试(三)数学(文)试题贵州省毕节市2023届高三诊断性考试(三)数学(理)试题四川省南充市阆中中学校2024届高三一模数学(理)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
名校
解题方法
7 . 如图甲,在四边形
中,
,
,将
沿
折起得图乙,点
是
上的点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/23/6ebc80a6-0f13-472d-90e4-8cf7e7e81ff6.png?resizew=313)
(1)若
为
的中点,证明:
平面
;
(2)若
,试确定
的位置,使二面角
的正弦值等于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4864c21e9664fa9111ede6425b09563a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3185a8075eea774ea1c6298fd1d0f5af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d32f7d17decde7a4c9d066dc9d648530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/2023/3/23/6ebc80a6-0f13-472d-90e4-8cf7e7e81ff6.png?resizew=313)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3653ada76ba0c8afe9d57c8e7832c6ed.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea3e27f6e6d1592408508cc9fd14d480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e9ac46aabe38e5ea1a8cb0febc98af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9868f77d5ab5073b6145f1c6d272122e.png)
您最近一年使用:0次
2023-03-23更新
|
1487次组卷
|
3卷引用:贵州省2023届高三3+3+3高考备考诊断性联考(二)数学(理)试题
名校
解题方法
8 . 已知四棱锥
的各个顶点都在球O的表面上,PA⊥平面ABCD,底面ABCD是等腰梯形,
,
,
,
,M是线段AB上一点,且
.过点M作球O的截面,所得截面圆面积的最小值为
,则
=___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a81f5437ce0f5f3a86c5c27308e5ce84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5a86745bfe1dfe7bc2683811210330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb8c91e4c85a9da7f54b2237d870a50d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/007b2553181025e0cddde32c1b0f9230.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e9fdc1f8ed0ae44b54a9a2a3aca2db4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2023-03-21更新
|
1419次组卷
|
7卷引用:贵州省毕节市2023届高三诊断性考试(二)数学(文)试题
名校
解题方法
9 . 如图,在三棱锥
中, 平面
平面
,
是边长为
的等边三角形,
,则该几何体外接球表面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/1f0b22d6-bd2f-4ed3-b1e1-323197bad1f2.png?resizew=237)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/1f0b22d6-bd2f-4ed3-b1e1-323197bad1f2.png?resizew=237)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-02-19更新
|
1333次组卷
|
8卷引用:贵阳省铜仁市2023届高三下学期适应性考试(一)数学(理)试题
贵阳省铜仁市2023届高三下学期适应性考试(一)数学(理)试题贵州省贵阳市2023届高三下学期适应性考试(一)数学(文)试题贵州省贵阳市2023届高三下学期适应性考试(一)数学(理)试题(已下线)专题12立体几何(选择填空题)江西省丰城中学2022-2023学年高三下学期3月月考文科数学试题(已下线)专题8.6 简单几何体的表面积与体积(重难点题型检测)-2022-2023学年高一数学举一反三系列(人教A版2019必修第二册)陕西省西安市铁一中学2023-2024学年高三上学期9月月考理科数学试题(已下线)陕西省西安市铁一中学2023-2024学年高三上学期第一次月考理科数学试题
名校
解题方法
10 . 如图,在三棱锥
中,
,且
,
为
的中点,点
在棱
上,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
,若
是边长为1的等边三角形,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/3680406f-f414-46fa-82ff-895f0a026f67.png?resizew=191)
(1)证明:平面
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69762790ec212216da6c09f91cdbe853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71807a35b3170fce28ee6edf4c00d083.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/3680406f-f414-46fa-82ff-895f0a026f67.png?resizew=191)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
您最近一年使用:0次
2022-11-25更新
|
1100次组卷
|
3卷引用:贵州省贵阳市五校2023届高三上学期联合考试(三)数学(理)试题