1 . 如图,在直三棱柱ABC-A1B1C1中,D为棱BC上一点.
![](https://img.xkw.com/dksih/QBM/2016/5/20/1572643402964992/1572643408707584/STEM/3cb5d56911ad45a8892aab067ac17bb0.png?resizew=182)
(1)若AB=AC,D为棱BC的中点,求证:平面ADC1⊥平面BCC1B1;
(2)若A1B∥平面ADC1,求
的值.
![](https://img.xkw.com/dksih/QBM/2016/5/20/1572643402964992/1572643408707584/STEM/3cb5d56911ad45a8892aab067ac17bb0.png?resizew=182)
(1)若AB=AC,D为棱BC的中点,求证:平面ADC1⊥平面BCC1B1;
(2)若A1B∥平面ADC1,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/501dc6babe43bd4d7e669b5dcea40945.png)
您最近一年使用:0次
2016-12-04更新
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978次组卷
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4卷引用:2016届江苏省南京市高三第三次模拟考试数学试卷
2016届江苏省南京市高三第三次模拟考试数学试卷江苏省南通中学2018届高三10月月考数学试题(已下线)专题07 空间几何体的平行于垂直-《巅峰冲刺2020年高考之二轮专项提升》(江苏)福建省福州市八县(市)协作校2021-2022学年高一下学期期末联考数学试题
2 . 在如图多面体中,
底面
,
,
,
是
的中点.
(1)
平面
;
(2)
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6480f384476190883f06c0289c7519.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fef5ff8e198b340ab2b5a2abe48e0e72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cba7d2ce69e27c561fd17d9eceb3a77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307807ee10071bafbe922eb18d2517d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c96bc9a285172c48e4726ee6492670ef.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1d0df73a49d4348a5c1e3aaa149cc8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8768996ca9a0f2c5d9a19abbd54df.png)
![](https://img.xkw.com/dksih/QBM/2018/6/4/1959978964992000/1961015858610176/STEM/06efe1533128400f92d3e43febb2baab.png?resizew=168)
您最近一年使用:0次
2016-12-04更新
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827次组卷
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2卷引用:2016届江苏省清江中学高三考前一周模拟二数学试卷
3 . 如图,在直三棱柱
中,底面ABC是正三角形,点D是BC的中点,
.
![](https://img.xkw.com/dksih/QBM/2016/5/9/1572623788318720/1572623793758208/STEM/3beb857adb574b119409f912f93b4607.png)
(1)求证:
平面
;
(2)试在棱
上找一点M,使得
,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f47d6a88e962cd790d2f159c021ec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad91719bd5fdc1b2d3d5298f2f44cc2.png)
![](https://img.xkw.com/dksih/QBM/2016/5/9/1572623788318720/1572623793758208/STEM/3beb857adb574b119409f912f93b4607.png)
(1)求证:
![](https://img.xkw.com/dksih/QBM/2016/5/9/1572623788318720/1572623793758208/STEM/52eebb968c80413faa903055942421c6.png)
![](https://img.xkw.com/dksih/QBM/2016/5/9/1572623788318720/1572623793758208/STEM/db25bff34ae0496db6f33a23f8c6ff29.png)
(2)试在棱
![](https://img.xkw.com/dksih/QBM/2016/5/9/1572623788318720/1572623793758208/STEM/04139598a88f4119a42145567ed45869.png)
![](https://img.xkw.com/dksih/QBM/2016/5/9/1572623788318720/1572623793758208/STEM/3a40c69341b84501921c9c2a04188436.png)
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4 . 如图,在四棱锥
中,底面
是正方形,侧面
是正三角形,
,E为PC的中点.
![](https://img.xkw.com/dksih/QBM/2016/5/9/1572623538077696/1572623543697408/STEM/095ea4ae937c479b9723e06b2f56f937.png)
(1)求证:
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6153163fecdf3f410411048428ccaef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8ee4d341e58ff69579737b9b0589a.png)
![](https://img.xkw.com/dksih/QBM/2016/5/9/1572623538077696/1572623543697408/STEM/095ea4ae937c479b9723e06b2f56f937.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152cfd5011c94e02c1a9cbbd4d8f58bb.png)
![](https://img.xkw.com/dksih/QBM/2016/5/9/1572623538077696/1572623543697408/STEM/dc7645b22164429bb81fd1928bba2e2c.png)
(2)求二面角
![](https://img.xkw.com/dksih/QBM/2016/5/9/1572623538077696/1572623543697408/STEM/58fe626aa3b148f8afe6bf86b09d3539.png)
您最近一年使用:0次
5 . 如图,在四棱锥
中,
是边长为
的正三角形,
为棱
的中点.
![](https://img.xkw.com/dksih/QBM/2016/5/5/1572619316486144/1572619322941440/STEM/fd4717c39f964205bb2ab7b0fb4788a4.png)
(Ⅰ)求证:
平面
;
(Ⅱ)若平面
平面
,
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6153163fecdf3f410411048428ccaef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da95ecece2225aeaa4fd2ea84dc61753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d6a3c285842331b8e15a1bea192dae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/2016/5/5/1572619316486144/1572619322941440/STEM/fd4717c39f964205bb2ab7b0fb4788a4.png)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/063510e3c1fb6a7ccc3b8e3e3c7d660e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(Ⅱ)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda343129962dbadde66672a66bc4ee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a9b8e7befcb7881c294070175b1a554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d1063e954e0a4d30a7ecb56354ecf51.png)
您最近一年使用:0次
2016-12-04更新
|
270次组卷
|
2卷引用:【全国省级联考】黑龙江省2018届高三高考仿真模拟(三)考试数学(理科)试题
6 . 如图,四棱锥
的底面为正方形,侧面
底面
,
,
分别为
的中点.
![](https://img.xkw.com/dksih/QBM/2016/4/25/1572604676218880/1572604681650176/STEM/de244a7a7ff647aaa674c728f438f8e1.png)
(1)求证:
面
;
(2)求证:平面
平面
.
![](https://img.xkw.com/dksih/QBM/2016/4/25/1572604676218880/1572604681650176/STEM/a2556bb33fa648eb9e13b521bc5fdaf7.png)
![](https://img.xkw.com/dksih/QBM/2016/4/25/1572604676218880/1572604681650176/STEM/c93d2bb7efb34dcaa8d60cdec4864b9c.png)
![](https://img.xkw.com/dksih/QBM/2016/4/25/1572604676218880/1572604681650176/STEM/588bc62d355b45e2ae7ebfef9757fb18.png)
![](https://img.xkw.com/dksih/QBM/2016/4/25/1572604676218880/1572604681650176/STEM/ba8b1fe37c1c4b1eb2c95cc40f55a5ab.png)
![](https://img.xkw.com/dksih/QBM/2016/4/25/1572604676218880/1572604681650176/STEM/876a4c11816e48b1bbf6b9815f1b77ab.png)
![](https://img.xkw.com/dksih/QBM/2016/4/25/1572604676218880/1572604681650176/STEM/334eba37c22b4336a05c5e6dca4823c8.png)
![](https://img.xkw.com/dksih/QBM/2016/4/25/1572604676218880/1572604681650176/STEM/de244a7a7ff647aaa674c728f438f8e1.png)
(1)求证:
![](https://img.xkw.com/dksih/QBM/2016/4/25/1572604676218880/1572604681650176/STEM/503a808dca484e9f8ff615e33942712a.png)
![](https://img.xkw.com/dksih/QBM/2016/4/25/1572604676218880/1572604681650176/STEM/44fa354e49b74871b2a6e092ab3751c7.png)
(2)求证:平面
![](https://img.xkw.com/dksih/QBM/2016/4/25/1572604676218880/1572604681650176/STEM/dfd7899f7fe0482f9430a6ef3c957a9f.png)
![](https://img.xkw.com/dksih/QBM/2016/4/25/1572604676218880/1572604681650176/STEM/af5c0a93fe7342848e5f6e1e7219cbdf.png)
您最近一年使用:0次
2016-12-04更新
|
710次组卷
|
2卷引用:2016届山东枣庄八中南校区高三下3月一模文科数学试卷
7 . 在如图所示的多面体
中,面
是边长为
的菱形,
,
,
面
,
,且
.
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572584036032512/1572584041889792/STEM/4c0e1539c1fb422bbf2ba816d067bea9.png)
(I)证明:
平面
;
(II)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20e38a1b5cfffd43a3405481a1d67cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c4c9080c1a87ece36994d63fea3131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90fb211f34523ab8b8809c2b9efb8a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f11e5b3ebac5f333e53ba46fb88f7fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e744a2d5ee025ce599d7241dcbba89fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4fcd27e5eacfa328372b6b0e41538f.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572584036032512/1572584041889792/STEM/4c0e1539c1fb422bbf2ba816d067bea9.png)
(I)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8badfeb9e7556486e02ab60df4dd32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(II)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffee8b7eff437080a0936d837ceabe95.png)
您最近一年使用:0次
8 . 如图,在四棱锥
中,底面
是直角梯形,侧棱
底面
,
垂直于
和
,
,
.
是棱
的中点.
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572579137347584/1572579143229440/STEM/36eea8c2257a4d26beb0e373afb9ce0e.png)
(1)求证:
平面
;
(2)求平面
与平面
所成的二面角的余弦值;
(3)设点
是直线
上的动点,
与平面
所成的角为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20dc940044210101ae8bbb17b37120c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34b0c4c783dd55685bd3e88bb31c6696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f5457bbeaaf4d6da96fc3ed2c6e61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34b0c4c783dd55685bd3e88bb31c6696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d86a0a3e867a448094f74a54a1fee64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b693717f525facc79b9a500ed998b109.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588a2119bc5e8cdf4731828b195a7892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f017bdeb820f8d9c6cd4ab5c8d678b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb1ae276659258455e7b41088b706e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f9c827e46d1a395fafbf15cdd6c6c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d8c67c8343701a69505477827538f72.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572579137347584/1572579143229440/STEM/36eea8c2257a4d26beb0e373afb9ce0e.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2cfb3721d007a9fcbc86a3919a11f74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24dd7a72d80ec9bb5db3e1537c291e97.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24dd7a72d80ec9bb5db3e1537c291e97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a14f2edcb16e66233e4ec720377d25.png)
(3)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f92c0005348ac35069a9fd56068da81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a44be92f38e063a01b8cd67418815cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09617a717b8f018f295fd517a0c3f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a14f2edcb16e66233e4ec720377d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ab55147ca5c0f958af43b0637ee31b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee27e22d0fbd0497a1555556df747456.png)
您最近一年使用:0次
9 . 如图所示,在四棱锥
中,底面
为正方形,侧棱
底面
,
分别为
的中点.
![](https://img.xkw.com/dksih/QBM/2016/3/29/1572561717133312/1572561722908672/STEM/168b32c85f344e7eb0e1a698b05b9b3d.png)
(1)求证:
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6153163fecdf3f410411048428ccaef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/551e4cd76a93de89ea2750160fe74923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b3c6e67d78d10080826ecd81dbc2ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1f9b30a2d396adfd0aef8d2a0373379.png)
![](https://img.xkw.com/dksih/QBM/2016/3/29/1572561717133312/1572561722908672/STEM/168b32c85f344e7eb0e1a698b05b9b3d.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
您最近一年使用:0次
10 . 已知
,
是两条不同的直线,
是一个平面,则下列命题正确的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d1a34ae2b8c77f8d7e355c6d1d667e.png)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() |
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