名校
解题方法
1 . 如图,在四棱锥
中,底面ABCD为平行四边形,
,
,
,平面
平面ABCD.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/7261bff4-2279-4b2e-8e3c-f4ea73280c20.png?resizew=297)
(1)证明:
;
(2)若
,E为AD的中点,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d6baf49925a5bcb359b542d45067c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/7261bff4-2279-4b2e-8e3c-f4ea73280c20.png?resizew=297)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafa8c14100a4f847b41b9148954116c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8254b52b379a420c17d38334940b073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e73fe210736ce7b30b039d34587e3c1.png)
您最近一年使用:0次
2022-07-03更新
|
400次组卷
|
4卷引用:河南省新乡市封丘县第一中学2021-2022学年高二下学期期末数学文试题
解题方法
2 . 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
3 . 如图,平面
平面
,在矩形
中,
,四边形
为菱形,
为线段
的中点,
.
![](https://img.xkw.com/dksih/QBM/2022/7/1/3013104712400896/3013956856143872/STEM/1ebc0562b980436488264e4d630e0938.png?resizew=221)
(1)证明:
平面
.
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc2dfae36adecd606a08108466d78202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2f03af2eccaab21d99c8afb24034d0d.png)
![](https://img.xkw.com/dksih/QBM/2022/7/1/3013104712400896/3013956856143872/STEM/1ebc0562b980436488264e4d630e0938.png?resizew=221)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071159cac13097ea0928285bc1be66d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa3254460ecbacecb3e57c5dce227f4.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/031376ca0bd18a2ab46c6b0ff4bead09.png)
您最近一年使用:0次
2022-07-02更新
|
536次组卷
|
4卷引用:河南省郑州市第九中学2022-2023学年高二上学期8月月考数学试题
名校
解题方法
4 . 如图,在三棱柱
中,
平面
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/17/19ae1176-0f7a-486e-9022-b25ecf62816f.png?resizew=204)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
平面
.
(2)若
,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/33255ce76e127e74548a41be4303321f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/17/19ae1176-0f7a-486e-9022-b25ecf62816f.png?resizew=204)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41104641f3e2260d00aeadf8fb8a078a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c97593e11d12376ccb6aa39006b03bcc.png)
您最近一年使用:0次
2022-05-26更新
|
900次组卷
|
2卷引用:河南省许平汝漯2021-2022学年高二下学期6月大联考数学(文科)试题
名校
解题方法
5 . 如图,已知四棱锥
的底面ABCD是矩形,
底面ABCD,
,M为BC的中点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/58af3e50-7c30-45d3-83fc-c070349a1c49.png?resizew=182)
(1)求四棱锥
的体积;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffddeafce03aae663bc823e2d5127c61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/186e5e7efe51fd25b9e38dc0fa23de9d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/58af3e50-7c30-45d3-83fc-c070349a1c49.png?resizew=182)
(1)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c650d59680db13009509578129f17f4.png)
您最近一年使用:0次
2022-05-10更新
|
562次组卷
|
2卷引用:河南名校联盟2021-2022学年高二下学期期中考试理科数学试题
名校
解题方法
6 . 如图,在四棱锥
中,底面ABCD是直角梯形,
,
,
,
,
,平面
平面ABCD,且
,E为BC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/27/43c6a96b-3efe-43db-8021-ce0c47d21dd0.png?resizew=186)
(1)证明:平面
平面PBD.
(2)若四棱锥
的体积为
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32e1b499d6b25ee132abcdd3f3cd288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c383691e8d740830a865b12d66f7633.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/27/43c6a96b-3efe-43db-8021-ce0c47d21dd0.png?resizew=186)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d96357a07048ba79b8c84097d359d9.png)
(2)若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c20567d122853e7c3119a1749ca8ccc4.png)
您最近一年使用:0次
2022-04-26更新
|
751次组卷
|
4卷引用:河南省许平汝漯联盟2021-2022学年高二下学期期中考试理科数学试题
名校
解题方法
7 . 如图,在四棱锥
中,
平面ABCD,底面ABCD是矩形,
,
,作
,交AD于点E,点F,G分别为线段PD,DC的中点.
![](https://img.xkw.com/dksih/QBM/2022/4/16/2959583193473024/2961379327459328/STEM/c1abd7db95c04ad9aa51e5686433adf4.png?resizew=234)
(1)证明:
平面BEF;
(2)求点E到平面BFG的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f235e99b0b55ac252c4b18cc315dc114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d320f180419175d75eebc618cc458b39.png)
![](https://img.xkw.com/dksih/QBM/2022/4/16/2959583193473024/2961379327459328/STEM/c1abd7db95c04ad9aa51e5686433adf4.png?resizew=234)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
(2)求点E到平面BFG的距离.
您最近一年使用:0次
2022-04-19更新
|
381次组卷
|
2卷引用:九师联盟(河南省)2021-2022学年高二下学期4月联考文科数学试题
8 . 鸡公山,位于河南省信阳市境内,是中国四大避暑胜地之一,也是新中国第一批对外开放的全国八大景区之一,鸡公山是大别山的支脉,主峰鸡公头又名报晓峰,像一只引颈高啼的雄鸡,因名之鸡公山.主峰海拔814m,山势奇伟,泉清林翠,云海霞光,风景秀丽.旅游区管委会在山上建设别致凉亭供游客歇脚,如图为设计图,该凉亭的支撑柱高为
m,顶部为底面边长为2的正六棱锥,且侧面与底面所成的角都是45°.
![](https://img.xkw.com/dksih/QBM/2022/4/16/2959583138357248/2961376410140672/STEM/43258562-8104-4561-b12d-3769026a0f48.png?resizew=160)
(1)求该凉亭及其内部所占空间的大小;.
(2)在直线PC上是否存在点M,使得直线MA与平面
所成角的正弦值为
?若存在,请确定点M的位置;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbd3e8cf8325999cde03adf845d3dd0.png)
![](https://img.xkw.com/dksih/QBM/2022/4/16/2959583138357248/2961376410140672/STEM/43258562-8104-4561-b12d-3769026a0f48.png?resizew=160)
(1)求该凉亭及其内部所占空间的大小;.
(2)在直线PC上是否存在点M,使得直线MA与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/814b61e61042874774c05cac41208024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
您最近一年使用:0次
名校
解题方法
9 . 如图所示,已知四边形
是边长为2的菱形,
,
,且
平面
,
//
,且异面直线
和
所成角的余弦值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fa63d3e323e0af20561b36a81aab19e.png)
![](https://img.xkw.com/dksih/QBM/2022/2/7/2911129309782016/2945848951496704/STEM/1a873fa6-070d-41be-bf30-10059d7118c7.png?resizew=185)
(1)求三棱锥
的体积
(2)求平面
与平面
所成角的余弦值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6569ff154c579d0f3bc2157bbdf53444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0042fbd04367d0df0fba2f59de72aa26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fab4d2a8ab12be628eb2ce03f0ae7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8120f2eeb724c756b5f84a14c6df527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fa63d3e323e0af20561b36a81aab19e.png)
![](https://img.xkw.com/dksih/QBM/2022/2/7/2911129309782016/2945848951496704/STEM/1a873fa6-070d-41be-bf30-10059d7118c7.png?resizew=185)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8040a570a0197daf7d1a7b50c89d9e2.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a06b68dc88cc22301870ad2819a1a2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1910c648c8bfa02218b2802f5bfbacfa.png)
您最近一年使用:0次
2022-03-28更新
|
252次组卷
|
2卷引用:河南省郑州市第九中学2022-2023学年高二上学期第一次月考数学试题
名校
解题方法
10 . 已知正三棱柱
的底面边长为2,D是
的中点,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2586e0bb827b0f1739e6ab36c0d62c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/5d932a24-62fa-4208-af51-d9a1cebe80aa.png?resizew=261)
(1)求三棱柱
的体积
(2)求直线
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/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2586e0bb827b0f1739e6ab36c0d62c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/5d932a24-62fa-4208-af51-d9a1cebe80aa.png?resizew=261)
(1)求三棱柱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a52848aff08399a36f217356007a4b.png)
您最近一年使用:0次
2021-11-23更新
|
620次组卷
|
4卷引用:河南省巩义市重点校2022-2023学年高二上学期第四次考试数学试题