名校
1 . 如图,,
为圆柱
的母线,
是底面圆
的直径,
,
分别是
,
的中点,
平面
.
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78172568aac9805d2ea2d5f742bf80c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e78a23ef615a0815e2cf7b226c418dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b94e97d085cea077cb82a0b7d2f523e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d3f9e8e58175cc46453515621e69193.png)
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名校
解题方法
2 . 已知底面边长和斜高长均为2的正四棱锥被平行于底面的平面所截得的正棱台为
,且满足
.
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea9dcbb4a05aa3b0cf780baa4489556e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b54387f870ae37f7951b253665d64f6.png)
(2)求棱台的体积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
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名校
3 . 如图,矩形
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c707f0202ec1aa233e1eeacc7a4587d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e4201ad1d4e25974c60439c2a561c08.png)
,平面
与棱
交于点G.
;
(2)求直线
与平面
夹角的正弦值;
(3)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d5f5199a80748d7a3afa1ac0c99135.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c707f0202ec1aa233e1eeacc7a4587d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e4201ad1d4e25974c60439c2a561c08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ccb204e61b8daace3f89787e8fdd39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa3254460ecbacecb3e57c5dce227f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df55452b4b5fcdcb71f713b736f8b9e1.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa3254460ecbacecb3e57c5dce227f4.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a06f9624936200b73a5b0ce0b5bdfad.png)
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2022-10-26更新
|
699次组卷
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2卷引用:北京市丰台区第十二中学2021-2022学年高二上学期期中数学试题
名校
4 . 如图,在多面体
中,平面
平面
.四边形
为正方形,四边形
为梯形,且
,
是边长为1的等边三角形,
为线段
三等分点(靠近点
),
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/7678c3e5-bc5e-4acc-ba99-f66e71160243.png?resizew=237)
(1)求证:
;
(2)求直线
与平面
所成角的正弦值;
(3)线段
上是否存在点
,使得直线
平面
?若存在,求
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866a6cb2f0ef738f62fa9fa372c0819b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d16a4959a99193a52d6fa8648cb2eb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f02795ff1af51fb0672800ceb02e7893.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/7678c3e5-bc5e-4acc-ba99-f66e71160243.png?resizew=237)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc553932ce81b2c940b34b28d80c8146.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
(3)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9eeee83b4b7c6ceac7828ff534ce15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a20ea69475dcf57a5ff18c13eceaaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff65109fbe7d397800f32b47cf38a22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a459b45690bb921bbae09065b3df9f1f.png)
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2022-10-26更新
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872次组卷
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2卷引用:福建省泉州第一中学2021-2022学年高二上学期期中考试数学试题
名校
5 . 如图所示,在三棱柱
中,
,点
在平面
的射影为线段
的中点,侧面
是菱形,过点
、B,D的平面
与棱
交于点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/631e9b44-e123-41f6-b1ec-0ec73c275a27.png?resizew=162)
(1)在图中作出截面
,并证明四边形
为矩形;
(2)若
,求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/631e9b44-e123-41f6-b1ec-0ec73c275a27.png?resizew=162)
(1)在图中作出截面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/202794c51b2166eca170da9c53247bea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/202794c51b2166eca170da9c53247bea.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e9ef3e849788645552cfb0735d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd4c85bb98a2a0afddd7ed92578ad2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
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6 . 已知正三棱柱的所有棱长都是1
![](https://img.xkw.com/dksih/QBM/2021/11/17/2853252759158784/2854910084849664/STEM/bba53a56-b3b4-493e-9f35-a53d4a156d97.png?resizew=333)
(1)画经过ABC三点的截面
(2)过棱BC作和底面成
二面角的截面,求此截面面积.
![](https://img.xkw.com/dksih/QBM/2021/11/17/2853252759158784/2854910084849664/STEM/bba53a56-b3b4-493e-9f35-a53d4a156d97.png?resizew=333)
(1)画经过ABC三点的截面
(2)过棱BC作和底面成
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
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2021-11-19更新
|
568次组卷
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4卷引用:上海市徐汇中学2021-2022学年高二上学期期中数学试题
上海市徐汇中学2021-2022学年高二上学期期中数学试题第10课时 课前 空间中平面与平面的平行(已下线)增分专题四 空间几何体截面问题(已下线)第04讲线线、线面、面面平行的判定与性质(核心考点讲与练)(2)
解题方法
7 . 如图,在正三棱柱
中,
,
,点
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/4105b049-3d89-402c-abc8-c23ff7250b4a.png?resizew=164)
(1)求证:直线
与
为异面直线;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/4105b049-3d89-402c-abc8-c23ff7250b4a.png?resizew=164)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ecad355286188fd317939fa50f9555.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51bf5b9fa4c861b5049c3d8ff9efb990.png)
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8 . 已知正方体
的棱长为2,若
,
分别是
的中点,作出过
,
,
三点的截面,并求出这截面的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7beb3b41f243ab66df61975d712428fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/2021/5/3/2712963070132224/2799670116335616/STEM/787a1697-d879-4fe8-99b4-ac5b247c3dd2.png)
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9 . 如图,已知四棱锥
的底面ABCD是边长为1的正方形,
平面ABCD,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/c18a53f2-e682-4c61-91a3-8e1622ac4dc7.png?resizew=155)
(1)求直线SB与平面ABCD所成角的余弦值;
(2)点E在棱SA上,且满足
,在直线BE上是否存在一点M,使
平面SBC?若存在,求出BM的长;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a450c312828a184ef6d18d8172b6e7d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb2e071d4e01107dcf7d95cbb86b415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea9e761d56d2fe8448b44f4ccd434627.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/c18a53f2-e682-4c61-91a3-8e1622ac4dc7.png?resizew=155)
(1)求直线SB与平面ABCD所成角的余弦值;
(2)点E在棱SA上,且满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39389de2c9053e22c2b881934a80fcfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba8f7af0e091e082100c3cd7f8c487f.png)
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解题方法
10 . 如图所示,正方体
的棱长为3,
是棱
上的一个动点,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2021/5/5/2714413251231744/2784548576878592/STEM/7a780e9ec6584ae9a2c4d8c0a411e741.png?resizew=252)
(1)求证:平面
平面
;
(2)若
,求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554b3b4c5ce7aca81becc07ed4903736.png)
![](https://img.xkw.com/dksih/QBM/2021/5/5/2714413251231744/2784548576878592/STEM/7a780e9ec6584ae9a2c4d8c0a411e741.png?resizew=252)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42ce82a4c37365f2d4dea2c4ad2e3288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2bf9ef324f1289e205e29fed105c38e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70abed7faf55deb24162255c5ad59577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7175df06e33cad4e6bbc3f2f6b0a2986.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4734735213b599a9915e1ed91a5d8ce4.png)
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2021-08-12更新
|
175次组卷
|
3卷引用:河南省焦作市普通高中2020-2021学年高二下学期期中考试试题文科数学