名校
解题方法
1 . 如图,在长方体
中,底面四边形
是正方形.
![](https://img.xkw.com/dksih/QBM/2022/9/3/3058467042279424/3060523932844032/STEM/014cb6eb998b4e86891b095a2576c4e7.png?resizew=167)
(1)求证:
平面
;
(2)若
,求几何体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2022/9/3/3058467042279424/3060523932844032/STEM/014cb6eb998b4e86891b095a2576c4e7.png?resizew=167)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4cd2b33bd983a9ed6575b9de04a46a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/622a61b260c96966e2527e346f4288ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a736592053ca39e373bd9ff417c77c.png)
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2 . 如图,正方形ABED的边长为1,AC=BC,平面ABED⊥平面ABC,直线CE与平面ABC所成角的正切值为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/31/275d8f76-7259-4904-a89c-953baf87b785.png?resizew=148)
(1)若G,F分别是EC,BD的中点,求证:
平面ABC;
(2)求证:平面BCD⊥平面ACD.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/31/275d8f76-7259-4904-a89c-953baf87b785.png?resizew=148)
(1)若G,F分别是EC,BD的中点,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf60ad9db3411f35704fa88d86bfef5a.png)
(2)求证:平面BCD⊥平面ACD.
您最近一年使用:0次
名校
3 . 如图,在直三棱柱
中,
,
,E为线段
的中点.
![](https://img.xkw.com/dksih/QBM/2022/7/13/3021544043560960/3023577646612480/STEM/3867385c98514522b71c4fcc07b1987f.png?resizew=213)
(1)求证:平面
平面
;
(2)求直线
与平面
所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3be3dcde7b744f420a588cb8dd5b01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://img.xkw.com/dksih/QBM/2022/7/13/3021544043560960/3023577646612480/STEM/3867385c98514522b71c4fcc07b1987f.png?resizew=213)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88762049d100f82fc0635f93ad656c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/becf2941e15d668d93ea6ed980afd0ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
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2022-07-16更新
|
956次组卷
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6卷引用:四川省宜宾市叙州区第一中学校2022-2023学年高二上学期第一学月考试数学(理)试题
名校
4 . 如图,在三棱柱
中,平面
平面
,四边形
是矩形,
是菱形,
分别是
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/9c635367-5edc-4881-a709-454dad64e54a.png?resizew=160)
(1)求证:
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61cdaadeae37736a1e6dd93fa1fe712f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80af97f1dc2fa60681380ef6faefab0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36690681ee4f3dc5008cc89dc5cc4b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846071242f981289741ad19f4e7190cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efa3d9405c2bbfc6770e93477bf1f059.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/9c635367-5edc-4881-a709-454dad64e54a.png?resizew=160)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4560fa4ad459b58b723c74bd24e51ebf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9539f8fb13345b449274b67bbda995db.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02f0c5dbb76086c87079141afc94685d.png)
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2022-05-19更新
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515次组卷
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3卷引用:四川省宜宾市叙州区第一中学校2022-2023学年高三上学期第三学月考试数学(理)试题
名校
解题方法
5 . 四棱锥P-ABCD中,PC⊥平面ABCD,底面ABCD是等腰梯形,且
,
,
,
,M是棱PB的中点.
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b342a682cbd4241855a243da3c016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be41b05e11ba5eadaaed9a224b949774.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0684e0b09b04661c602437982c0397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9bad875ab4b5b8c707d452db4cabaa4.png)
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2022-05-08更新
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717次组卷
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5卷引用:四川省宜宾市叙州区第二中学校2022-2023学年高三上学期第三次学月考试数学(文)试题
6 . 如图,在正四棱柱
中,
是线段
上的动点,有下列结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/922ee2e1-e20f-4f45-a1b5-3d5cb1ae6b25.png?resizew=151)
①
;
②
,使
;
③三棱锥
体积为定值;
④三棱锥
在平面
上的正投影的面积为常数.
其中正确的是( )
![](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/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/922ee2e1-e20f-4f45-a1b5-3d5cb1ae6b25.png?resizew=151)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52ab924e3692515bd8be4c36472a959a.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ed1178b2add167a048b1ff7ab7712de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb88ba49607e90d5b1ddf625e2cf7e3.png)
③三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62382b7ef29453a5c07151c262e05311.png)
④三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62382b7ef29453a5c07151c262e05311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
其中正确的是( )
A.①②③ | B.①③ |
C.②③④ | D.①④ |
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2022-04-01更新
|
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2卷引用:四川省宜宾市2022届高三第二次诊断测试数学(文)试题
解题方法
7 . 如图,在四棱锥
中,
,
,
,
,
,
为线段
的中点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/766c8ba1-8ebb-4486-b11d-c29b72601d6d.png?resizew=198)
(1)求证:
平面
;
(2)若过三点
的平面将四棱锥
分成上,下两部分,求上面部分的体积
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b8e49d68afab33806a63d25a0861c7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c8a798adea38ddfeeb16e1f8bcfd9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e0f73b3c63084d9c032802e01f9a168.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd657e48b15b9b54a55817e2c26b22.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/766c8ba1-8ebb-4486-b11d-c29b72601d6d.png?resizew=198)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若过三点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d103ec7a1b677d94abf90e0077cd525.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13ff5ff92f2505a933d0213039f4c014.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
您最近一年使用:0次
名校
解题方法
8 . 如图,在三棱柱
中,
平面
,
,
,
,M为棱
的中点.
![](https://img.xkw.com/dksih/QBM/2022/2/13/2915479012761600/2921795496157184/STEM/8d0ecf311d8d4c2c92634a68c1850e49.png?resizew=185)
(1)证明:
平面
;
(2)求三棱锥
的体积.
![](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/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/2022/2/13/2915479012761600/2921795496157184/STEM/8d0ecf311d8d4c2c92634a68c1850e49.png?resizew=185)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/139da6530a5bbc05b36e23fc1c8cac6f.png)
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2022-02-22更新
|
788次组卷
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3卷引用:四川省宜宾市第四中学校2022-2023学年高三上学期12月月考数学(文科)试题
四川省宜宾市第四中学校2022-2023学年高三上学期12月月考数学(文科)试题陕西省咸阳市武功县2022届高三下学期第二次质量检测文科数学试题(已下线)重难点03 立体几何与空间向量-2022年高考数学【热点·重点·难点】专练(全国通用)
9 . 已知三棱柱
中,
,
,
平面ABC,
,E为AB中点,D为
上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/37bd6a4f-9eb8-49ca-b186-1bf201e1bb61.png?resizew=147)
(1)求证:
;
(2)当D为
中点时,求平面ADC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/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26cb239a35eb1f0563b5863d986859bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/37bd6a4f-9eb8-49ca-b186-1bf201e1bb61.png?resizew=147)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ccd5c41c921836b50f8e18abfdc5df3.png)
(2)当D为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
您最近一年使用:0次
名校
解题方法
10 . 如图所示,在直三棱柱ABC-A1B1C1中,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/3/9/2932407529332736/2946023371005952/STEM/50a6e23377b94677b1e2de384ab39108.png?resizew=206)
(1)当P为B1C的中点时,求证:A1B1
平面APC1;
(2)试在线段B1C上找一点P(异于B1,C点),使得
,并证明你的结论;
(3)当
时,求多面体A1B1C1PA的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df09d04a0c1a9c47aa547811469a6e0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
![](https://img.xkw.com/dksih/QBM/2022/3/9/2932407529332736/2946023371005952/STEM/50a6e23377b94677b1e2de384ab39108.png?resizew=206)
(1)当P为B1C的中点时,求证:A1B1
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
(2)试在线段B1C上找一点P(异于B1,C点),使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34b7435f674beb041681fd5615a5b88.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34b7435f674beb041681fd5615a5b88.png)
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2022-03-28更新
|
204次组卷
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2卷引用:四川省宜宾市第四中学校2022-2023学年高二上学期期中考试数学(文)试题