名校
解题方法
1 . 如图,在棱长为2的正方体
中,E,F分别是
,
的中点.
![](https://img.xkw.com/dksih/QBM/2022/1/5/2847429027332096/2892419725180928/STEM/5f7e9ffa-7453-4667-8bd7-c723c2979427.png?resizew=174)
(1)求点
到平面
的距离;
(2)若G是棱
上一点,当
平面
时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://img.xkw.com/dksih/QBM/2022/1/5/2847429027332096/2892419725180928/STEM/5f7e9ffa-7453-4667-8bd7-c723c2979427.png?resizew=174)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
(2)若G是棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f100f1e48d34169f4f90aad15d02e67c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
您最近一年使用:0次
2022-01-11更新
|
986次组卷
|
9卷引用:湖北省鄂东南三校联考2021-2022学年高二上学期阶段考试(一)数学试题
湖北省鄂东南三校联考2021-2022学年高二上学期阶段考试(一)数学试题广西贺州市昭平县昭平中学2021-2022学年高二上学期第一次月考数学(理)试题重庆市万州清泉中学2022-2023学年高二上学期9月月考数学试题广东省珠海市第二中学2022-2023学年高二上学期10月月考数学试题福建省漳州市第三中学2022-2023学年高二下学期期中数学试题湖北省武汉市第十九中学2023-2024学年高二上学期10月月考数学试题陕西省部分学校(神木中学等学校)2023-2024学年高二上学期10月月考数学试题广东省广州市真光中学2023-2024学年高二上学期9月阶段性质量检测数学试题(已下线)模块一 专题2 A 空间向量的应用基础卷 期末终极研习室高二人教A版
名校
2 . 如图,三棱锥
中,
底面
,
,
,
为
的中点,点
在
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/3653d95c-6f1b-4592-b165-f292ad4b8d6c.png?resizew=127)
(1)求证:
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)求平面
与平面
所成的二面角的平面角(锐角)的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97e89a358226b4be8786077a60555c69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b97aa0d985b33b0d82571b0b3a383e6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216b9a949b87bd815f5937501a3c97ee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/3653d95c-6f1b-4592-b165-f292ad4b8d6c.png?resizew=127)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662698361c6b3ddaf0c28a3c87be53e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
您最近一年使用:0次
2021-12-16更新
|
1340次组卷
|
2卷引用:西藏拉萨那曲高级中学2022届高三上学期期中考试数学(理)试题
解题方法
3 . 如图,在直三棱柱
中,
,
,
,点P在侧棱
上.
![](https://img.xkw.com/dksih/QBM/2021/11/19/2854485033517056/2869524431986688/STEM/5bbcb4b4d21c4ef2968e6058e584dfe3.png?resizew=182)
(1)当点P为侧棱
的中点时,求直线
与直线CP所成角的余弦值;
(2)当点P与点
重合时,求点
到平面PAC的距离;
(3)求直线
与平面ACP所成角的正弦值的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209acf15985d1ea1ad86fc4a37e38c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/2021/11/19/2854485033517056/2869524431986688/STEM/5bbcb4b4d21c4ef2968e6058e584dfe3.png?resizew=182)
(1)当点P为侧棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
(2)当点P与点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
您最近一年使用:0次
名校
解题方法
4 . 如图,在三棱柱
中,
平面
,
,
,
分别是
的中点
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/2c97a700-33ee-4717-ab9c-15eff9369789.png?resizew=199)
(1)求直线
与平面
所成角的正弦值;
(2)在棱
上是否存在一点
,使得平面
与平面
的夹角的余弦值为
?若存在,求出
点的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ba708880f5eb782acbf2c961c2494c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed8f7d3d7043d4b1eb98fc5c4e2fcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450176ba93397527fc3520c55dd1476a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/2c97a700-33ee-4717-ab9c-15eff9369789.png?resizew=199)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
(2)在棱
![](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/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6595f862f1b3dfc3e8ec0331c8cc9ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2021-11-12更新
|
975次组卷
|
3卷引用:天津市静海一中、杨村一中等五校2021-2022学年高二上学期期中联考数学试题
名校
5 . 如图,直四棱柱
的底面
是平行四边形,
,
,
,点
是
的中点,点
在
且
.
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844863191736320/2849768661663744/STEM/62d467d7444646de9f5ca0bde29f4346.png?resizew=265)
(1)证明:
平面
;
(2)求锐二面角
平面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4cb73e9d976cbfe9c590044fa69dd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4339a40ae9d1947ec3a4b3e2fa3a16cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c3ec174b1ce835cc8737ff6ce57e52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4272ca39f8f4d12bcbc4a0bc50e8f001.png)
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844863191736320/2849768661663744/STEM/62d467d7444646de9f5ca0bde29f4346.png?resizew=265)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1d2e0f281222a5f289ea4008370aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a681d311a864d38cf306a0c137cbcca.png)
(2)求锐二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6238a6fb52a9d2e3521ba66ef9a5c247.png)
您最近一年使用:0次
名校
解题方法
6 . 在矩形ABCD中,
,
.点E,F分别在AB,CD上,且
,
.沿EF将四边形AEFD翻折至四边形
,使平面
与平面BCFE垂直,若在线段EB上有动点H.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/6376f0a3-4afc-4094-8884-c27d5ba24d39.png?resizew=402)
(1)从以下三个条件中任选一个作为已知条件________,以确定点
的位置,①若四点
,
,C,H共面;②若三棱锥
的体积是三棱锥
体积的
;
(2)在第(1)问基础上,在线段
上有一动点P,设二面角
的平面角为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b0393ce62b24aa5f9b740d4cc6743b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3362a45b72536c714c5107b0ae94f1c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c76e6c67644b8bad9bfe11c7ec3081d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c76e6c67644b8bad9bfe11c7ec3081d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/6376f0a3-4afc-4094-8884-c27d5ba24d39.png?resizew=402)
(1)从以下三个条件中任选一个作为已知条件________,以确定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/489a59b8bbf3d8dada2c39d1264cb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b7c24a4e15ead4dcb19d32300f52aa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
(2)在第(1)问基础上,在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284750727aa2c32b2477d126daefb329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb633c18f0a3542930b6b82ce672010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
您最近一年使用:0次
名校
7 . 如图,在四棱锥
中,底面
是矩形,
平面
,
,点E、M分别在线段
、
上,且
,连接
,延长
与
的延长线交于点F,连接
,
.
![](https://img.xkw.com/dksih/QBM/2021/10/17/2831075522772992/2833959570628608/STEM/d3c94f7d1d914952bca1cfcc79068ed6.png?resizew=337)
(1)求证:
平面
;
(2)若
时,求平面
与平面
所成角的正弦值;
(3)若直线
与平面
所成角的正切值为
,求
值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a48a7409e1a2071eccd3a0a0ac1699d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/251eb070e41f6efcdf988c717bb252f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://img.xkw.com/dksih/QBM/2021/10/17/2831075522772992/2833959570628608/STEM/d3c94f7d1d914952bca1cfcc79068ed6.png?resizew=337)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb841d975d5c7ab05598040e99df6825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0901e2f5cefe6468cbbcaa332287d63.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec7e56107b5f2f34e420caffd1159b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d246f9eceab371ebf47a47c2f11a4ad.png)
(3)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
名校
解题方法
8 . 如图,在四棱锥
中,
底面
,底面
为正方形,
,
为
的中点,
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/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccfd3cc8d727f5d4f41c834f6851a094.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-10-19更新
|
935次组卷
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20卷引用:湖湘大联考2021-2022学年高二上学期10月月考数学试题
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9 . 如图,在三棱柱
中,点E,F分别在棱
,
上(均异于端点),
,
,
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/5e3a0c86-a33d-40dd-8b75-8cd8c5393f2c.png?resizew=260)
(1)求证:四边形
是矩形;
(2)若
,
,求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbec5434bcf9173dfeebd92aa0c5070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dba9cf66066aafbafb6116928eeb10ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d25e8fc3dda4f8b45491514b6e22a962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/5e3a0c86-a33d-40dd-8b75-8cd8c5393f2c.png?resizew=260)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6480f384476190883f06c0289c7519.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c4599c8c996873814673237b8942df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d9e036eecc9aebcc2d2a2855bbfafdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
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2021-09-18更新
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4卷引用:湖北省新高考九师联盟2021届高三下学期2月质检巩固数学试题
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10 . 在四棱锥
中,
平面
,
,
,
,
为
的中点,
为
的中点
.
![](https://img.xkw.com/dksih/QBM/2021/4/24/2706886319022080/2808924572221440/STEM/417689b8976a4e2989b3a6737da8aaed.png?resizew=554)
(Ⅰ)线段
上是否存在点
,使得
平面
?若存在,指出点
的位置;若不存在,请说明理由;
(Ⅱ)若异面直线
与
所成角的余弦值为
,求二面角
的平面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71e90f9f4e44173888a54c624852064a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e62ca104bd39a1646922b5836f1826b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0963f1eecde5d06fe95d91f622fca7e6.png)
![](https://img.xkw.com/dksih/QBM/2021/4/24/2706886319022080/2808924572221440/STEM/417689b8976a4e2989b3a6737da8aaed.png?resizew=554)
(Ⅰ)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a041e768d10a0d59d95e1bbef881261.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59841953d876e61083ababe8ad616dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(Ⅱ)若异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e0a8cfb3747c454e0698e12857ffae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33adb74906403b0b00fcbd9fa691d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1daa0856a5f94a9c08df27f4db785c76.png)
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