1 . 如图,在三棱柱
中,侧棱
底面
,
,
,
,
分别为棱
,
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/c8e685c6-502b-43b3-981d-a0466bc159c0.png?resizew=174)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231673dd67ab79d3c5da73904ceade1e.png)
;
(2)若
,
,求三棱锥
的体积;
(3)判断直线
与平面
的位置关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a8bfe2553e852df73185d017c0a62fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/c8e685c6-502b-43b3-981d-a0466bc159c0.png?resizew=174)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231673dd67ab79d3c5da73904ceade1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50857bcc9b0377b73c2c0f98bae0f0a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2990ef24039c6be7643cb582062503a.png)
(3)判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
您最近一年使用:0次
2020-01-16更新
|
734次组卷
|
4卷引用:广东省东莞市2019—2020学年高一上学期期末数学试题
解题方法
2 . 已知四棱柱
在空间直角坐标系中,A在原点,
,四边形
是矩形.
(1)求三棱锥
的体积;
(2)求
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5ac0b303ec6ec19cf206100f54aa1f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/27/7122f987-9814-41d7-87b5-d997c805056a.png?resizew=232)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b0567b68ad33a371b2427de134a3ea5.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
您最近一年使用:0次
2023-09-26更新
|
121次组卷
|
2卷引用:广东省惠珠联考2023-2024学年高二上学期10月联考数学试题
3 . 如图是一个搭建在空地上的帐篷,它的下部是一个正六棱柱,上部是一个正六棱锥,其中帐篷的高为
,正六棱锥的高为
,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/3e711ce7-a147-4fbb-ade6-02dbb05dd063.png?resizew=233)
(1)求帐篷的表面积(不包括底面);
(2)求帐篷的容积(材料厚度忽略不计).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32fb50c66cd2de786b39cb442ec54a16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d45b91a5a5b5700e5b9403d8bb3f0c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33c24197d0b6fdded3494280fb9bda02.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/3e711ce7-a147-4fbb-ade6-02dbb05dd063.png?resizew=233)
(1)求帐篷的表面积(不包括底面);
(2)求帐篷的容积(材料厚度忽略不计).
您最近一年使用:0次
名校
解题方法
4 . 如图:在正方体ABCD-A1B1C1D1中,E为DD1的中点,点G,F分别是线段BD,EC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/14/9380bbc8-4e3e-4d24-ae09-ed678888a3e6.png?resizew=147)
(1)求证:GF//平面AED
(2)若BD1=
,求三棱锥E-ACD的体积
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/14/9380bbc8-4e3e-4d24-ae09-ed678888a3e6.png?resizew=147)
(1)求证:GF//平面AED
(2)若BD1=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cef812f839622326a7d7027cc806aaeb.png)
您最近一年使用:0次
2021-07-21更新
|
402次组卷
|
2卷引用:广东省汕头市澄海中学2020-2021学年高一下学期期中数学试题
解题方法
5 . 如图,四棱锥
的底面ABCD是平行四边形,
底面ABCD,
,
,
.
平面PAC;
(2)若点E是侧棱PB中点,平面ADE与平面PAD所成的二面角为60°,请求出四棱锥
的体积.
![](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/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
(2)若点E是侧棱PB中点,平面ADE与平面PAD所成的二面角为60°,请求出四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
6 . 如图,在底半径为2,母线长为4的圆锥中内接一个高为
的圆柱,
(1)求圆锥的表面积和体积.
(2)求圆柱的表面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/15/35168f76-f192-4864-843a-3ec812bb734d.png?resizew=169)
(1)求圆锥的表面积和体积.
(2)求圆柱的表面积.
您最近一年使用:0次
2020-10-26更新
|
551次组卷
|
5卷引用:广东省东莞市新世纪英才学校2020-2021学年高一下学期4月月考数学试题
7 . 如图,矩形
中,
,
,
为
的中点,将
沿
折到
的位置,
. ![](https://img.xkw.com/dksih/QBM/2017/9/28/1783768974942208/1785051521073152/STEM/f789598245994661b4e50783acabcf39.png?resizew=226)
(1)求证:平面
平面
;
(2)若
为
的中点,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080ca48cd27d4bf9d9ef084b558fc17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88c44f558705de3bcefcfc0ece96b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e779a6fdae98cc3cb8035962de62969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd28190ab716f19f77849a6f06e8878.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc83e10c6e0846fae03a3866ba83bff.png)
![](https://img.xkw.com/dksih/QBM/2017/9/28/1783768974942208/1785051521073152/STEM/f789598245994661b4e50783acabcf39.png?resizew=226)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab427567216421d272495039177f8497.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0760712e3e2ea02b755b751e760d0c55.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267f78b1773fc99fde7339ba03562f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18402a688d00c0b4ccbfdf95625f641c.png)
您最近一年使用:0次
2017-04-15更新
|
1698次组卷
|
8卷引用:广东省汕头市潮南实验学校校2018届高三上学期入学摸底考试数学(文)试题
名校
解题方法
8 . 如图,四棱锥
的底边
是正方形,点
、点
分别是线段
、
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/c40e7fff-9838-45c0-91db-0bfd4fa21776.png?resizew=191)
(1)证明:
平面
;
(2)若
是四棱锥
的高,求三棱锥
的体积.
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7b6d04f024ca05cdfacc8ce9137c15.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/c40e7fff-9838-45c0-91db-0bfd4fa21776.png?resizew=191)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8a21df84cf292db93b937f4ea47bfe.png)
您最近一年使用:0次
名校
解题方法
9 . 如图,在直四棱柱
中,底面
是正方形,
,
,线段AC上有两个动点E,F(顺序如图),且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/17558466-c015-43e7-a719-d9111bebad74.png?resizew=132)
(1)求三棱锥
的体积;
(2)求直线
与
所成角的余弦值的取值范围;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6469878a955cc09fac22ba5aea3fb962.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/17558466-c015-43e7-a719-d9111bebad74.png?resizew=132)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83661ebf0bbfb0b0db0ca079f16f9763.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f1158eaa2e338f564eb18de5bef1d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
您最近一年使用:0次
2023-12-18更新
|
95次组卷
|
2卷引用:广东省惠州市惠阳区泰雅实验学校2023-2024学年高二上学期10月月考数学试题
解题方法
10 . 已知如图:四边形
是矩形,
平面
,且
,
,点
为
上一点,且
平面
.
(1)求三棱锥
的体积;
(2)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/941eba4dbc1094107e1eeb02c8d8cd56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a9286db92f635afd4fcea5aa3f73436.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa3c61d6c19e187b4b824b6f5610cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bb2bc62460d10fc1962c69d456eb740.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a879800a059ce741a99bb2c171f32afe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/fe2f3555-51c3-415e-baa6-8780863a7a0e.png?resizew=161)
您最近一年使用:0次