1 . 在四棱锥
中,AC,BC,CD两两垂直,
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/4/21/2963138208210944/2965023350448128/STEM/6116e735-f8e4-47d2-b37b-b554698348e3.png?resizew=128)
(1)求证:平面
平面ADE;
(2)求点C到平面ADE的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5164a3cc47e266446d49127e2ef10c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f1058c75d95f314e4f5739838e388c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b41f2f95d643629321deb6e905c4f1ed.png)
![](https://img.xkw.com/dksih/QBM/2022/4/21/2963138208210944/2965023350448128/STEM/6116e735-f8e4-47d2-b37b-b554698348e3.png?resizew=128)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc6db50a9709c3f4d84eee7bdf1250.png)
(2)求点C到平面ADE的距离.
您最近一年使用:0次
2022-04-24更新
|
1420次组卷
|
4卷引用:广西南宁市第三中学2022届高三二模数学(文)试题
广西南宁市第三中学2022届高三二模数学(文)试题山西省2022届高三第二次模拟数学(文)试题(已下线)文科数学-2022年高考考前押题密卷(全国甲卷)山西省朔州怀仁市2022届高三第三次模拟数学(文)试题
解题方法
2 . 如图,四棱锥
中,底面ABCD是边长为2的菱形,且
,
,
,M为AD的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/3869779f-51ed-4af1-86ad-240eb00dfd0d.png?resizew=212)
(1)证明:
平面PBM;
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6906f59d09ce31956d6f5ea2b23fc77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1b1cf43d7dbb0725e92913cef8c11c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dfb8d8c26dd656f60119ad25b9fff2d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/3869779f-51ed-4af1-86ad-240eb00dfd0d.png?resizew=212)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
2022-06-17更新
|
711次组卷
|
3卷引用:广西百色民族高级中学2021-2022学年高一下学期期末数学模拟题3
解题方法
3 . 如图,在直三棱柱
中,
,E、F分别是
、
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/030b8f1e-00bd-402b-9bb6-6b99b2b33a99.png?resizew=150)
(1)求证:
平面
;
(2)求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2498b78493e5ba9c3c4dd582e866e76b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/030b8f1e-00bd-402b-9bb6-6b99b2b33a99.png?resizew=150)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5f445af1ae136773cb338920552ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
您最近一年使用:0次
2021-10-24更新
|
725次组卷
|
3卷引用:广西南宁市2022届高三高中毕业班上学期摸底测试数学(文)试题
名校
4 . 如图,在直三棱柱
中,
,M为棱
上一点.
的交线为l,证明
;
(2)若M为
的中点,且二面角A-CM-B的正切值为3,求线段BC的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b964b9935646ab49cecd400234c1ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eca73676b19b1d3eed63cc51ada687.png)
(2)若M为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
您最近一年使用:0次
2022-05-29更新
|
662次组卷
|
4卷引用:广西柳州市2021-2022学年高一下学期期末联考数学试题
5 . 如图,在四棱锥
中,
,底面ABCD是边长为
的正方形.E是PC的中点,过点A,E作棱锥的截面,分别与侧棱PB,PD交于M,N两点,
![](https://img.xkw.com/dksih/QBM/2022/6/3/2993276956000256/2995553915928576/STEM/b044648d-704e-478d-9f27-7a1a04792622.png?resizew=205)
(1)证明:
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca999a4141b000334fec029ce268c1a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/2022/6/3/2993276956000256/2995553915928576/STEM/b044648d-704e-478d-9f27-7a1a04792622.png?resizew=205)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84be64d28b1623e71ad989f37336b1f2.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a6d5aaf764583992b9ec1e7dea8f5f8.png)
您最近一年使用:0次
名校
解题方法
6 . 如图,在长方体
中,
,
,点
,
分别为棱
,
的中点.
![](https://img.xkw.com/dksih/QBM/2022/4/26/2966410405871616/2997572027432960/STEM/2da8adb9-23e7-4d01-9f13-fa4dc8ee2729.png?resizew=216)
(1)证明:
,
,
,
四点共面;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e3b3d73ff96882a0fb4d025ecc5669d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dfd2625e4d67a4b10face96537721a5.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/2022/4/26/2966410405871616/2997572027432960/STEM/2da8adb9-23e7-4d01-9f13-fa4dc8ee2729.png?resizew=216)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/6795cae2df43a722e1355e9562d93c09.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef676509065322bfc244e59607bb60d.png)
您最近一年使用:0次
2022-06-09更新
|
306次组卷
|
3卷引用:广西南宁市第三中学2021-2022学年高二下学期期末考试数学(文)试题
7 . 已知四棱锥
中,
,
平面
,点
为
三等分点(靠近
点),
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/3/29/2946770221383680/2947579343773696/STEM/4c6bb18a-c50d-49bd-a010-d6909bc2b397.png?resizew=183)
(1)求证:
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/958f880eccc0a0e15aefc54078d8aa2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac192cfba38bf0e2df0c2d490596aa65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b190c8d3d7d7d0e6e959e8a52eae90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f88870519c473fb6fb36b5a88a42df24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4280be91682e5d8a0d0704190319bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac2ae98eb223b4fe33e53e9d3ba4cc40.png)
![](https://img.xkw.com/dksih/QBM/2022/3/29/2946770221383680/2947579343773696/STEM/4c6bb18a-c50d-49bd-a010-d6909bc2b397.png?resizew=183)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ade8233bc5e455bc00825e081647519.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aede171b1554a3a945fefc3c122f900a.png)
您最近一年使用:0次
名校
解题方法
8 . 如图,已知正四棱锥
中,O为底面
对角线的交点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/3612a9ff-8f8d-43c2-8a67-85083b2c65a5.png?resizew=176)
(1)求证:
平面
;
(2)求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/3612a9ff-8f8d-43c2-8a67-85083b2c65a5.png?resizew=176)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/963a91995abd4927d75406d16e10a81f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2022-03-28更新
|
336次组卷
|
2卷引用:广西贺州市2021-2022学年高一下学期期末质量检测数学试题
9 . 如图所示,已知四棱锥
中底面
是矩形,面
底面
且
,
,
为
中点.
![](https://img.xkw.com/dksih/QBM/2022/3/15/2936816196378624/2937445682946048/STEM/8b561896-33ec-40f1-82fd-1f5a35923cdc.png?resizew=245)
(1)求证:平面
平面
;
(2)求点
到平面
的距离.
![](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/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11517ceb79e1b52361c95a72c7862f77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/2022/3/15/2936816196378624/2937445682946048/STEM/8b561896-33ec-40f1-82fd-1f5a35923cdc.png?resizew=245)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
您最近一年使用:0次
2022-03-16更新
|
974次组卷
|
4卷引用:广西普通高中2022届高三3月教学质量监测考试(第一次适应性测试)数学(文)试题
名校
解题方法
10 . 如图所示,在三棱柱ABC-A1B1C1中,AB=AC,侧面BCC1B1⊥底面ABC,E,F分别为棱BC和A1C1的中点.
(2)求证:平面AEF⊥平面BCC1B1.
(2)求证:平面AEF⊥平面BCC1B1.
您最近一年使用:0次
2022-04-02更新
|
682次组卷
|
9卷引用:广西柳州市第三中学2022-2023学年高二上学期11月学考二模考试数学试题
广西柳州市第三中学2022-2023学年高二上学期11月学考二模考试数学试题(已下线)专题三 立体几何检测-2022年高考数学二轮复习讲练测(新教材·新高考地区专用)(已下线)类型二 空间点、线、面的位置关系-【题型突破】备战2022年高考数学二轮基础题型+重难题型突破(新高考专用)【市级联考】江苏省徐州市2018-2019学年高三考前模拟检测数学试题【市级联考】江苏省徐州市2019届高三考前模拟检测数学试题河北省唐山市开滦第二中学2019-2020学年高二上学期第二次月考数学试题江西省南昌市八一中学、洪都中学等七校2020-2021学年高二下学期期中联考数学(理)试题江西省南昌市八一中学、洪都中学等七校2020-2021学年高二下学期期中联考数学(文)试题江苏省南京市中华中学2023-2024学年高一下学期5月月考数学试卷