1 . 如图,在长方体
中,当
,
,点
在棱
上,且
,则当
的面积最小时,棱
的长为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f656e1d1f68954e5f06de8958f6a9310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df998ca31abcbdccb3e43f6269b80702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ee983e0381bed5c2d79b2b8629f064a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/5/8d423acb-ba72-4c2b-a7a7-68947f0d3320.png?resizew=167)
您最近一年使用:0次
名校
解题方法
2 . 若
,
,
,则
的形状是 ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/163879245468c153eb732a0a85283ad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d6f88bd38cf09a196ef6a85f3473420.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/362a82c6af9f32ae167e682df3d908c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.等边三角形 | B.直角三角形 |
C.钝角三角形 | D.不等边锐角三角形 |
您最近一年使用:0次
2023-06-27更新
|
132次组卷
|
3卷引用:2.1.1 建立空间直角坐标系 2.1.2 空间两点间的距离
解题方法
3 . 如图所示,在正四棱柱
中,
,
,
为
中点,动点
在线段
,则线段
长度的最小值是 ________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ecad355286188fd317939fa50f9555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/28/aac10758-a2f7-4a72-a273-dea2b4b30044.png?resizew=124)
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名校
解题方法
4 . 如图,在三棱柱
中,
平面
,
,
,
,
分别为
,
,
,
的中点,
,
.
,
的坐标;
(2)求
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a8bfe2553e852df73185d017c0a62fb.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1efa2b0018617bd579875185dafca39a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9d5815dc775d5a5810fff0b016a8d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e6567f04a1bfbf57c21ac8bc4893375.png)
您最近一年使用:0次
2023-06-27更新
|
772次组卷
|
6卷引用:2.1.1 建立空间直角坐标系 2.1.2 空间两点间的距离
2.1.1 建立空间直角坐标系 2.1.2 空间两点间的距离(已下线)模块三 专题3 空间向量及的坐标与空间直角坐标系 B能力卷(已下线)模块三 专题3 空间向量及的坐标与空间直角坐标系 B能力卷 (人教B)(已下线)模块四 专题4 大题分类练 《空间向量与立体几何》拔高能力练甘肃省临洮中学2023-2024学年高二下学期第一次月考数学试题江西省龙南中学2022-2023学年高二下学期6月期末考试数学试题
5 . 在空间直角坐标系中,已知点
,
,
,点
在
平面上,且点
到点
,
,
的距离相等,则点
的坐标为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da3c06a00cf0bbec836e10870374f1a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be94472db8523b2c8a1d0c44136e80b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d4a60a55b70640266b446f64c3f4007.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ef1e8a88d934eca5399decc64fdbd43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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2022高二·全国·专题练习
解题方法
6 . 如图,在长方体ABCD﹣A1B1C1D1中,AD=AA1=2,AB=6,E、F分别为A1D1、D1C1的中点.分别以DA、DC、DD1所在直线为x轴、y轴、z轴建立空间直角坐标系D﹣xyz.
(1)求点E、F的坐标;
(2)求证:EF∥平面ACD1.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/26/6a1db24f-e8d9-4e87-9c0d-c4e752b1b1ea.png?resizew=220)
(1)求点E、F的坐标;
(2)求证:EF∥平面ACD1.
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7 . 已知正方体
的棱长为1,点
为棱
的中点.若点
是线段
上的点,且
,则线段
的长为__________ ;若点
是正方体
的表面上的动点,且
,则线段
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c767875a64fea20109b86411e00237a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0ff310aabd2282b539537ebed3f788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c767875a64fea20109b86411e00237a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0ff310aabd2282b539537ebed3f788.png)
您最近一年使用:0次
名校
8 . 如图,在正三棱柱
中,
,E是
的中点,F是
的中点,若过A,E,F三点的平面与
交于点G,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/1a9ef496-7921-4540-91f8-69c026eca883.png?resizew=120)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95196d4658088f565e495c005cfed5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b884f9747461be96b79220d9ebb7edc2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/1a9ef496-7921-4540-91f8-69c026eca883.png?resizew=120)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-12-20更新
|
474次组卷
|
3卷引用:专题01 空间向量与立体几何小题专项练习
名校
解题方法
9 . 已知点
是抛物线
上的动点,点A的坐标为
,则点
到点A的距离与到
轴的距离之和的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42102c1c07562853219ca5918803a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe7434f0fbfc1569f6e66dcdab2b27bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.13 | B.12 | C.11 | D.![]() |
您最近一年使用:0次
2022-12-17更新
|
838次组卷
|
5卷引用:专题06 抛物线小题专项练习
名校
解题方法
10 . 如图,在长方体
,点
在
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/3b6829e0-ee8e-406d-8718-00002be4050f.png?resizew=166)
(1)求
;
(2)求直线
与
所成角的余弦值;
(3)求
到
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2283fd441781107fe1a6ed8b1fb07bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1364213f546b37f8764ddcb59e36ae4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/3b6829e0-ee8e-406d-8718-00002be4050f.png?resizew=166)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f70d067d9f0d3aefd53fbd95d4b8b7ee.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce1b066f8869d0ff4513f7a99745125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
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