名校
解题方法
1 . 已知三棱锥
的体积为
是空间中一点,
,则三棱锥
的体积是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943032df8db30f2c52335b0fff28ce6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5923ce2c5d69a5d50e694dc83ae661e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec8fa1baf58d104867f595c15c001c1.png)
您最近一年使用:0次
2024-03-03更新
|
815次组卷
|
5卷引用:浙江省丽水市2023-2024学年高二上学期1月期末教学质量监控数学试题
浙江省丽水市2023-2024学年高二上学期1月期末教学质量监控数学试题广东省2024届高三数学新改革适应性训练五(九省联考题型)江苏省南通市海门中学2023-2024学年高二下学期3月阶段练习数学试卷(已下线)第七章 应用空间向量解立体几何问题拓展 专题一 空间向量基底法 微点4 空间向量基底法(四)【基础版】(已下线)专题7 立体几何综合问题【练】
2 . 已知平面
和平面
的夹角为
,
,已知A,B两点在棱上,直线
,
分别在这个二面角的两个半平面内,且都垂直于
.已知
,
,则
的长度为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/b9557223-2fbf-4e9d-9b76-afdf84a76288.png?resizew=162)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b707f5ee4fbb2e637c65fbc6d8ed03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aabdde5c06a238f7623344f13755fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/b9557223-2fbf-4e9d-9b76-afdf84a76288.png?resizew=162)
A.![]() | B.![]() | C.![]() | D.![]() ![]() |
您最近一年使用:0次
3 . 如图,在正四面体
中,
是
的中点,
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/1333ba03-e885-4d69-ae93-6bb68d22a580.png?resizew=139)
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd344fbde526ed6c84ba7a9924140fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d627b9a5b268fe69aa466f7c465c5f3f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/1333ba03-e885-4d69-ae93-6bb68d22a580.png?resizew=139)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
您最近一年使用:0次
4 . 如图所示,平行六面体
中,
,
.
(1)用向量
表示向量
,并求
;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d20d9a8058985d9847ddd99046fdb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22a27ea00fee0b2571c6f1e8cc943a1d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/ed55734c-a610-409b-8b20-2f769dfb319c.png?resizew=113)
(1)用向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d68873c59a21b0cd408cdf2b47d51096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccec46f7c4da972fef6e940158628242.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c33e3af60b6aa94f39bbd04470d2e404.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388e976ab53ad76d39c74b59a09b1663.png)
您最近一年使用:0次
名校
5 . 在三棱柱
中,若
,
,
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/3eab8c53-e5b2-43bb-ac48-ac72f0dba9c3.png?resizew=163)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e55362a3a1f592e6551851c42d3078.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9206f052cc7298fdf9049f9386f53928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8780f5b68f8907a57c1c2f96233a78c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89a5b3db010507ba0985f57168d9150c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/3eab8c53-e5b2-43bb-ac48-ac72f0dba9c3.png?resizew=163)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-02-29更新
|
255次组卷
|
2卷引用:山东省济南市2023-2024学年高二上学期1月期末质量检测数学试题
6 . 已知四面体
中,
,且
与平面
所成的角为
,则当
时,
的最小值是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a8c3e673f6942831b8431e44409689f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ab4b75fa22deba7fcbcdcb31dd45b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68f31592afa0f6735b29d6c616ff567c.png)
您最近一年使用:0次
7 . 如图,在空间直角坐标系
中,正方体
的棱长为1,且
于点E,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a834024400d0730af3e640ca4d5f54b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22a20b689283cc8b311eddae4c8c4242.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c77bb3ceea90414c8561c000e724f2aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/398c5d7b6ff455e94a78034670a3eeca.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/fe8be1e3-2774-4a29-807f-bb610ae8e4d9.png?resizew=145)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
8 . 已知三棱锥
,点M,N分别为BC,PA的中点,且
,用
表示
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ae7dc09ab4960c7e8df32c39a573448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e12e95f703ad30ab9a3d38376830989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a014dff8997c661055229de29c61cfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8926ddd0b69d714c7310cc5bf23d199d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
9 . 如图,三棱锥O-ABC中,M是BC的中点,
,设
用
表示向量
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bf61a6de70565fbf32abe3c53c79312.png)
_____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6e979e750bebbabd2a5fc706de928f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c515266d44d063e3d18da3bc556f293.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e12e95f703ad30ab9a3d38376830989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2490b8c788fcdec42cb81fae32f9d0e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bf61a6de70565fbf32abe3c53c79312.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/cd013d69-34b6-4b0f-8bc3-6f0b486d43ce.png?resizew=146)
您最近一年使用:0次
解题方法
10 . 如图,在四面体
中,
分别是
的中点,
相交于点
,则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68f2c6d854d7ca94f77c0c9ba969dd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f758a811b8a2c260431aa7e6a4060987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2b511ab0356abac781a9d768af4529.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/acb9a28c-c638-4e0a-9295-0bc943a1957c.png?resizew=170)
A.![]() ![]() |
B.![]() |
C.![]() |
D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次