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![]() ![]() |
您最近一年使用:0次
解题方法
2 . 已知正方体
的棱长为
分别为棱
的点,且
,若点
为正方体内部(含边界)点,满足:
为实数,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0caff91dc7b498b2b83550af63f0eed1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94009f976a2dd35f294bbcbb6e859ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0935b253b0afe1deec8c3ca59e48cd1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c7b04b3e19cf0bcaf970cf5ab096e9d.png)
A.点![]() ![]() |
B.当![]() ![]() ![]() |
C.![]() ![]() |
D.当![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
3 . 如图,点
是正四面体
底面
的中心,过点
的直线分别交
于点
是棱
上的点,平面
与棱
的延长线相交于点
,与棱
的延长线相交于点
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/28/964d2948-5e4c-4af3-883d-2e371eb155bf.png?resizew=167)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a351136b18bc7d3bd5122332772ab23b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e675a92cad72c65aa4071b9d9e226090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b9b62ea88f3953f9010bcb685d3329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2697046fb5056181292bcea4f7f3f8e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/28/964d2948-5e4c-4af3-883d-2e371eb155bf.png?resizew=167)
A.存在点![]() ![]() ![]() |
B.存在点![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() |
D.![]() |
您最近一年使用:0次
2022·全国·模拟预测
4 . 在四棱锥P-ABCD中,PA⊥平面ABCD,且PA=AC=2AB=2AD=4,CD⊥AD,CB⊥AB,G为PC的中点,过AG的平面
与棱PB、PD分别交于点E、F.若EF∥平面ABCD,则截面AEGF的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/2022/5/17/2981295122096128/2981385120686080/STEM/704981f7aac04943a16bbd94f9b85eb8.png?resizew=140)
您最近一年使用:0次
名校
5 . 已知三棱锥
,P是面
内任意一点,数列
共9项,
且满足
,满足上述条件的数列共有___________ 个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4278c0911e7df78965e78cff69cac5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11865d1a141fd49877f521ef42e611c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53756227eb608c53062d84cec7acf0cb.png)
您最近一年使用:0次
2022-03-30更新
|
1398次组卷
|
2卷引用:辽宁省大连市第二十四中学等校2022届高三高考联合模拟考试数学试题
解题方法
6 . 已知直四棱柱
的底面为正方形,
,P为直四棱柱内一点,且
,其中
,
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e095775876648816d3af187806c5f027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4255d27934309b77326e760beaa9fb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86bc584ad930b670e2e46cf1173d4995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aadae85764946eca7b6dac1f03fed7c.png)
A.当![]() ![]() |
B.当![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() |
您最近一年使用:0次
2022-03-05更新
|
1296次组卷
|
5卷引用:2022年高三数学新高考测评卷(猜题卷七)
2022年高三数学新高考测评卷(猜题卷七)(已下线)第28练 空间向量的概念、运算与基本定理广东省“深惠湛东”四校2022-2023学年高二上学期联考数学试题(已下线)模块三 专题3 小题满分挑战练 (2)(苏教版)(已下线)1.1.1 空间向量与线性运算(重难点突破)-【冲刺满分】2023-2024学年高二数学重难点突破+分层训练同步精讲练(人教A版2019选择性必修第一册)