2024高二下·全国·专题练习
解题方法
1 . 图①是一颗拥有完美正八面体晶形的钻石,其示意图如图②.设ξ为随机变量,从棱长为1的正八面体的12条棱中任取2条,当2条棱相交时,ξ=0;当2条棱平行时,ξ的值为2条棱之间的距离;当2条棱异面时,ξ=2.
;
(2)求ξ的分布列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dc90906d26dfdc1a3680e8ca5729a1.png)
(2)求ξ的分布列.
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2 . 已知a,b,c是三条直线,如果a与b是异面直线,b与c是异面直线,那么a与c有怎样的位置关系?并画图说明.
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3 . 已知P为
所在平面外一点,
,
,E,F分别是PA和BC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/22/46ad5acd-8377-4684-985e-a79570f3cd18.png?resizew=173)
(1)求证:EF与PC是异面直线;
(2)求EF与PC所成的角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1e4b16c2c6c9bd089da78122e9d2511.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02aae3ca1fa1075fa53664736707716e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/22/46ad5acd-8377-4684-985e-a79570f3cd18.png?resizew=173)
(1)求证:EF与PC是异面直线;
(2)求EF与PC所成的角.
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2024高三·全国·专题练习
4 . 已知直线
为异面直线,且
与
不相交,求证:
为异面直线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f880e93459a7f3743063f23ae705949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a475fec8ded321e10a6697319fb975.png)
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2024高三·全国·专题练习
解题方法
5 . 如图,
是棱长为2的正方体,
为面对角线
上的动点(不包括端点),
平面
交
于点
,
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/22/34ac1890-fe85-44bd-8c07-c86a81a0a607.png?resizew=158)
(1)试用反证法证明直线
与
是异面直线;
(2)设
,将
长表示为
的函数
,并求此函数的值域;
(3)当
最小时,求异面直线
与
所成角的正弦值.
![](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/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a7442b64b37f685bc3ae88ff450c1a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee50a23604ea2a9c1f3649dab97c2e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/22/34ac1890-fe85-44bd-8c07-c86a81a0a607.png?resizew=158)
(1)试用反证法证明直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8711eddf26d11fc974dfb6da4b640918.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
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2024高三·全国·专题练习
解题方法
6 . 在正方体
中,E和F分别为BC和
的中点.
的位置关系,并说明理由;
(2)判断直线
和直线
的位置关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
(2)判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.png)
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名校
解题方法
7 . 如图,已知
、
、
、
分别是空间四边形
的边
、
、
、
的中点.
为平行四边形;
(2)证明:
和
是异面直线.
![](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/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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2024-01-04更新
|
727次组卷
|
5卷引用:上海市崇明中学2023-2024学年高二上学期期中考试数学试题
上海市崇明中学2023-2024学年高二上学期期中考试数学试题(已下线)8.4.2 空间点、直线、平面之间的位置关系【第一练】“上好三节课,做好三套题“高中数学素养晋级之路(已下线)6.3空间点、直线、平面之间的位置关系-【帮课堂】(北师大版2019必修第二册)(已下线)专题3.3空间点、直线、平面之间的位置关系-重难点突破及混淆易错规避(人教A版2019必修第二册)(已下线)11.3.1&11.3.2 平行直线与异面直线、直线与平面平行-【帮课堂】(人教B版2019必修第四册)
2023高三·全国·专题练习
8 . 在异面直线
中的每一条上各取两个点,
.求证:
与
和
与
为两对异面直线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb353264ea3008dcda61415cd2a60ee.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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2023高三·全国·专题练习
9 . 已知正方体
的棱长为2,点
是棱
的中点.求证:
与
是异面直线.
![](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/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/becf2941e15d668d93ea6ed980afd0ba.png)
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