名校
解题方法
1 . 如图,在梯形
中,
,
,
,
,
,点
满足
,把
沿
折起到
,使得
,其中
分别为
,
,
的中点.
(1)证明:
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae1e04eeb4de72e5750dae77bcb6f88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd6a2b112facda441f4e34bf5c145fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d79e7020414add95907e061df505ef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e991c6d2a8757d728e34f7c5241cbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b6accdd9b317c922d335e44911df357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f82a30d6b232dc4d8f35d2d6e0e0f42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df41affef71f4e2478dc85a6c5330a60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/20/6e3b8fbb-994a-44f8-afba-afd16cc94c00.png?resizew=351)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/832f51e49422388ae22e8bf5b17b5448.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/543c3b2beb11fbc94d66570bfbed3ea8.png)
您最近一年使用:0次
2023-07-18更新
|
329次组卷
|
2卷引用:河南省平顶山市汝州市第二高级中学2022-2023学年高一下学期期末考试数学试题
解题方法
2 . 如图,在棱长为2的正方体
中,
分别是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/30/9ff418f3-da9a-4796-ae12-8bb329bae8f4.png?resizew=152)
(1)求平面
截正方体所得截面面积;
(2)证明:平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b094411c562930ff2d67b582cfd48cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b37c6f82c1eed122cc0749ac25ff114.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/30/9ff418f3-da9a-4796-ae12-8bb329bae8f4.png?resizew=152)
(1)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e2da608b66c9aee03e2503388ba4fd.png)
(2)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a46fbde58e12b1edc038ae9e921722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed4cba9d2412e4a28f8740bddd5738d4.png)
您最近一年使用:0次
名校
解题方法
3 . 如图,在四棱锥
中,底面ABCD为梯形,
平面ABCD,
,
,
,
,E为PC的中点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/4d2b4fe5-ac4b-4493-986c-13fc7e9dc990.png?resizew=177)
(1)证明:
平面PBC.
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95475bfc06e884754eb4a455c3f434e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304e9d63e7fdc531f4f7b805b765a1b1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/4d2b4fe5-ac4b-4493-986c-13fc7e9dc990.png?resizew=177)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df6a3413b77478c8d4e1e0389dbf5984.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
2023-02-25更新
|
495次组卷
|
6卷引用:河南省2022-2023学年高三下学期2月模拟考试(一)文科数学试题
解题方法
4 . 如图,在三棱锥
中,
,
,O为棱AC的中点.
![](https://img.xkw.com/dksih/QBM/2022/7/1/3013237568692224/3014442459144192/STEM/0df85cc4f66942289b322502b0037232.png?resizew=226)
(1)证明:
平面
;
(2)若点M在被AB上,且A到平面POM的距离为
,求平面POM将三棱锥
分成的左、右两部分的体积之比.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b370b7ca2390e41f13ccf2217fc85071.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4db3cc075b88dea374e92f94a178aa20.png)
![](https://img.xkw.com/dksih/QBM/2022/7/1/3013237568692224/3014442459144192/STEM/0df85cc4f66942289b322502b0037232.png?resizew=226)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若点M在被AB上,且A到平面POM的距离为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
您最近一年使用:0次
名校
解题方法
5 . 如图所示,在直四棱柱
中,底面ABCD是等腰梯形,
,
,
,四边形
是正方形.
![](https://img.xkw.com/dksih/QBM/2022/5/24/2986420541005824/2987744622305280/STEM/0babbae5-66e1-4454-955f-aeecba309a60.png?resizew=245)
(1)指出棱
与平面
的交点E的位置(无需证明),并在图中将平面
截该四棱柱所得的截面补充完整;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12143a06ed24558d8cc7ad39961d3e1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b724168afaee2ecddf97257180be18.png)
![](https://img.xkw.com/dksih/QBM/2022/5/24/2986420541005824/2987744622305280/STEM/0babbae5-66e1-4454-955f-aeecba309a60.png?resizew=245)
(1)指出棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b2213b575a7cfaffcdf91885005c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b2213b575a7cfaffcdf91885005c7d.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8375f8f2a0dd3e0212ce52d334952c.png)
您最近一年使用:0次
2022-05-26更新
|
752次组卷
|
4卷引用:河南省平顶山市汝州市第一高级中学2022届高三下学期考前模拟考试理科数学试题
名校
解题方法
6 . 在四棱锥
中,底面
为直角梯形,
,E为
的中点,点P在平面
内的投影F恰好在直线
上.
![](https://img.xkw.com/dksih/QBM/2022/5/8/2975169770020864/2975787149991936/STEM/06e16c95-d363-4dab-9ed9-8a068904d0f2.png?resizew=179)
(1)证明:
.
(2)求点B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/2cefd90d94e2b2c3d8c3fc8b169466a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/2022/5/8/2975169770020864/2975787149991936/STEM/06e16c95-d363-4dab-9ed9-8a068904d0f2.png?resizew=179)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0910601e7d760188d10beee6a48f2ac.png)
(2)求点B到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
您最近一年使用:0次
2022-05-09更新
|
811次组卷
|
8卷引用:河南省汝州市2022届高三5月模拟考试文科数学试题
名校
7 . 如图,在三棱柱
中,△ABC是边长为2的正三角形,顶点
在底面ABC的投影为AB的中点O,已知
与底面ABC内所有直线所成角中的最小值为
,M为棱
上一点.
![](https://img.xkw.com/dksih/QBM/2022/5/6/2973399710457856/2974485636784128/STEM/cd770189-fc68-4cbf-baf2-24590861df11.png?resizew=249)
(1)求三棱锥
的体积;
(2)若
,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/2022/5/6/2973399710457856/2974485636784128/STEM/cd770189-fc68-4cbf-baf2-24590861df11.png?resizew=249)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c868ec5de0af022feee3eeb98e2c30ae.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d303f299e07c5eb5eefc7a80e574c65e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800faf43a424f2dd708d1426e4e91615.png)
您最近一年使用:0次
2022-05-07更新
|
338次组卷
|
3卷引用:河南省平顶山市、许昌市、汝州市九校联盟2022届高三下学期押题信息卷(二)理科数学试题
解题方法
8 . 如图,四边形ABCD是圆柱的轴截面,
,O分别是上、下底面圆的圆心,EF是底面圆的一条直径,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/c5c9bfff-a4f4-4a38-b1db-8604bc8efcce.png?resizew=168)
(1)证明:
.
(2)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7faabc484ce3666706c1beffda4bcfe2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/c5c9bfff-a4f4-4a38-b1db-8604bc8efcce.png?resizew=168)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab00e0cff0876c4183a47f1272cf9928.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0573047d36d2945d6e474bdf051db1a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec66c1d36c6c2be3d3fc4519dfca195e.png)
您最近一年使用:0次
2022-03-26更新
|
347次组卷
|
3卷引用:河南省平顶山市汝州市2022届高三3月联考文科数学试题
解题方法
9 . 如图,正三棱柱
的底面边长为2,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/2526e6b5-0347-40f0-b986-7d3462ccb38d.png?resizew=148)
(1)求证:
;
(2)若点
在线段
上,且
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ef8866ccf160ddc441bf69c5d3a3d5a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/2526e6b5-0347-40f0-b986-7d3462ccb38d.png?resizew=148)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f35646cb29fafd1e1a214b69e4f22d.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450d4bcf49545b1042fdf3343b9b70a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b340f8cf31baaaa8862b495d6465adc.png)
您最近一年使用:0次
2022-01-25更新
|
561次组卷
|
2卷引用:河南省济源平顶山许昌2021-2022学年高三上学期第一次质量检测数学(文)试题
名校
解题方法
10 . 如图,四棱柱
的底面是矩形,
平面
,
,
,E,M,N分别是
的中点.
![](https://img.xkw.com/dksih/QBM/2021/12/29/2883193402408960/2883221590564864/STEM/4b5abad6-8982-4781-a31b-1be75e4102d0.png?resizew=154)
(1)证明:
平面
;
(2)求点C到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a8bfe2553e852df73185d017c0a62fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30dbd22b0cbb47c914c42a4355e3ca98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c7676b9fbff1a2f3c3087efc50fcd0e.png)
![](https://img.xkw.com/dksih/QBM/2021/12/29/2883193402408960/2883221590564864/STEM/4b5abad6-8982-4781-a31b-1be75e4102d0.png?resizew=154)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5a463a03c549b0dba6d90e7f16a2af.png)
(2)求点C到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5a463a03c549b0dba6d90e7f16a2af.png)
您最近一年使用:0次
2021-12-29更新
|
792次组卷
|
2卷引用:河南省平顶山市、许昌市、汝州市九校联盟2022届高三下学期押题信息卷(二)文科数学试题