名校
解题方法
1 . 已知几何体
是正方体,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
A.![]() ![]() | B.在直线![]() ![]() |
C.![]() ![]() | D.在直线![]() ![]() ![]() |
您最近一年使用:0次
2022-03-10更新
|
613次组卷
|
3卷引用:贵州省黔东南州2022届高三一模考试数学(理)试题
贵州省黔东南州2022届高三一模考试数学(理)试题河南省名校联盟2021-2022学年高三下学期3月大联考理科数学试题(已下线)思想05 第三篇 思想方法(测试卷)--《2022年高考数学二轮复习讲练测(浙江专用)》
名校
解题方法
2 . 如图,在正方体
中,AB=2,E,F,P,Q分别为棱
,
,
,BC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/d9a776e6-58e5-41fa-8367-6c3a870b2dcf.png?resizew=175)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
平面
.
(2)在棱
上确定一点G,使P,Q,
,G四点共面,指出G的位置即可,无需说明理由,并求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/d9a776e6-58e5-41fa-8367-6c3a870b2dcf.png?resizew=175)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b70d05c03d14c3bd6f61746e556c1f85.png)
(2)在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f0cd7f2db3d44cd398f731670b70b1.png)
您最近一年使用:0次
2022-03-09更新
|
483次组卷
|
2卷引用:贵州省黔东南州2022届高三一模考试数学(文)试题
名校
解题方法
3 . 如图,在三棱柱
中,
平面
,
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/4ad0dc3d-caa5-4db5-b75b-e200c5658c6c.png?resizew=146)
(1)求证:
平面
;
(2)求证:平面
平面
.
![](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/6a44a60a3d758c82a1923d8b5fe27507.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/2022/11/26/4ad0dc3d-caa5-4db5-b75b-e200c5658c6c.png?resizew=146)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebe6a446b91e73b181f9f4d56264dd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41104641f3e2260d00aeadf8fb8a078a.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/512201cb07fd1df01985baa7a3c71c1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
您最近一年使用:0次
2021-08-17更新
|
493次组卷
|
3卷引用:贵州省黔东南州2021-2022学年高一下学期期末文化水平测试数学试题
名校
解题方法
4 . 如图,在三棱锥
中,
底面
,
是正三角形,
是棱
的中点,如
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/bd3cb584-f58c-4bdd-a99b-10c3f35fd770.png?resizew=124)
(1)在平面
内寻找一点
使得
平面
,并说明理由;
(2)在第(1)的条件下,若
且直线
与平面
所成角为
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1364213f546b37f8764ddcb59e36ae4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/bd3cb584-f58c-4bdd-a99b-10c3f35fd770.png?resizew=124)
(1)在平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d32e76582bf550593fdef53e081225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf12905647aeeded72bbca21a63f319.png)
(2)在第(1)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2588007040850c4b1ba0380536951ca3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
名校
解题方法
5 . 如图所示,在三棱柱
中,M为棱
的中点.
![](https://img.xkw.com/dksih/QBM/2021/6/14/2742622851866624/2743036705185792/STEM/f83cddb709ab405f8eb506f80a2379a0.png?resizew=241)
(1)求证∶![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
平面
;
(2)若
⊥平面ABC,
,AB=AC=AA1=2,求点B到平面AB1M的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/2021/6/14/2742622851866624/2743036705185792/STEM/f83cddb709ab405f8eb506f80a2379a0.png?resizew=241)
(1)求证∶
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/770b4f16694b2bd79a1a93d776a82680.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
您最近一年使用:0次
2021-06-14更新
|
1242次组卷
|
4卷引用:贵州省黔东南自治州镇远县文德民族中学校2022届高三上学期期末数学(文)试题
贵州省黔东南自治州镇远县文德民族中学校2022届高三上学期期末数学(文)试题安徽省100名校2020届高三下学期攻疫联考数学(文)试题(已下线)考点32 直线、平面平行的判定及其性质-备战2022年高考数学(文)一轮复习考点帮湖北省武汉外国语学校2020-2021学年高一下学期期末数学试题
名校
解题方法
6 . 如图,在四棱锥
中,
底面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e468e01ce56dc6b21f3cbe123971ceb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/649686d0-e889-4bec-8084-80454f178480.png?resizew=261)
(1)若
在侧棱
上,且
,证明:
平面
;
(2)求平面
与平面
所成锐二面角的余弦值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f09ad78d4eccd1a9c9ccd3c4af79c79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e468e01ce56dc6b21f3cbe123971ceb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/649686d0-e889-4bec-8084-80454f178480.png?resizew=261)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/945bc019f28b45c7bfd1337a3fb40771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d46554105150391e671609fc6348a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
您最近一年使用:0次
2020-04-14更新
|
277次组卷
|
5卷引用:贵州省黔东南州黎平县黎平三中2019-2020学年高二下学期期末考试数学(理)试题
7 . 已知四棱柱
的底面是边长为
的菱形,且
,
平面
,
,
于点
,点
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/3bfa6812-7b08-4f9d-a7d7-515d9990c37c.png?resizew=210)
(1)求证:
平面
;
(2)求平面
和平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb67f27bcda7681b19239a199b4c4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ddbb0422a136f45653c8c369f2d75fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1a56baf43ffdf67bc8460856e31fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b937442ad4cc480adc11bb143559454.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/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/3bfa6812-7b08-4f9d-a7d7-515d9990c37c.png?resizew=210)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcafa398cc6b6079883e7ad153eb62d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba99277e38f8d9f817a9d7db8198219.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa3254460ecbacecb3e57c5dce227f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba99277e38f8d9f817a9d7db8198219.png)
您最近一年使用:0次
2020-03-19更新
|
2035次组卷
|
4卷引用:2020届贵州省丹寨民族高级中学高三上学期第三次强化考试数学(理)试题
2020届贵州省丹寨民族高级中学高三上学期第三次强化考试数学(理)试题2019届内蒙古鄂尔多斯西部四旗高三上学期期末联考数学(理)试题江西省靖安中学2019-2020学年高二4月线上考试数学(理科)试题(已下线)考点26 空间向量求空间角(讲解)-2021年高考数学复习一轮复习笔记
名校
8 . 如图,四边形
为正方形,
平面
,点
分别为
的中点,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/b86b3a25-f2b7-4f00-901f-679e6e6aa7ea.png?resizew=153)
(1)证明:
平面
;
(2)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2682f3f3f0f72c893b99073bcac83ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e2a44d05b1d387150c4b359e021ffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87261df80b82221732329b6ef3fdda7f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/b86b3a25-f2b7-4f00-901f-679e6e6aa7ea.png?resizew=153)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2b5cfae407016cad45bbdefea05833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64eb31601464364be2baf4aa87404bcd.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b33b7213d99a817bff19bcf740a0697c.png)
您最近一年使用:0次
2020-03-19更新
|
169次组卷
|
2卷引用:贵州省凯里市第一中学2019-2020学年高二上学期半期数学试题
名校
解题方法
9 . 如图,四边形
为正方形,
平面
,点
分别为
的中点,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/0446923d-d92d-4010-a89c-cb6aec519298.png?resizew=141)
(1)证明:
平面
;
(2)求三棱锥
的体积与三棱锥
的体积之比.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2682f3f3f0f72c893b99073bcac83ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e2a44d05b1d387150c4b359e021ffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87261df80b82221732329b6ef3fdda7f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/0446923d-d92d-4010-a89c-cb6aec519298.png?resizew=141)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2b5cfae407016cad45bbdefea05833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64eb31601464364be2baf4aa87404bcd.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05479ce59da01ea9c5bef3f20efadb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
2020-03-19更新
|
234次组卷
|
2卷引用:贵州省凯里市第一中学2019-2020学年高二上学期半期数学试题
名校
解题方法
10 . 在三棱锥
中,
和
是边长为
的等边三角形,
,
分别是
的中点.
![](https://img.xkw.com/dksih/QBM/2020/3/18/2422136152317952/2422968955953152/STEM/0a4aefded2f5408897e701b8010c97f1.png?resizew=138)
(1)求证:
平面
;
(2)求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a5d13876d85bd398c219b3e5b105aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8350b1d4296fd6ff5fa2f58d0cf70df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe964aa3574061970c9c8066df21c89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40c2013527c6089d7df59bca21a4598c.png)
![](https://img.xkw.com/dksih/QBM/2020/3/18/2422136152317952/2422968955953152/STEM/0a4aefded2f5408897e701b8010c97f1.png?resizew=138)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6748d9b9948485c5ba87ca8751c6e053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc6f007dbf1c1a36eb031e520608403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
2020-03-19更新
|
253次组卷
|
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