名校
1 . 如图,四边形
和四边形
均是直角梯形,
二面角
是直二面角,
.
(1)证明:在平面
上,一定存在过点
的直线
与直线
平行;
(2)求二面角
的余弦值.
![](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/2b8e554925cc139260dd5c289805068a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ed12dbce4429a93b12a2aaad0da5520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a31a38de26ae485ae43f55feada1b226.png)
(1)证明:在平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99d65b5127ccd01345f8bca5d8a94bc4.png)
![](https://img.xkw.com/dksih/QBM/2017/11/14/1817093975367680/1818574724825088/STEM/dd1a78c8f7c242628fdfc7bd7aa8a62c.png?resizew=136)
您最近一年使用:0次
2 . 如图,在四棱锥
中,
,
,
,
.设
分别为
的中点.
(1)求证:平面
平面
;
(2)求二面角
的平面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f028aa2f87b30aec1d9070c30c305f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a1cacb8d68bac8bca9a950b9dd02819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/502a46021ff0bd64fc4cd3bad7d8a826.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b888fcf87fcce16001127775ecbe7e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3139771a2871a52882d464b8edd6404b.png)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e5ec7123a46ae370c2bbdf92dd49e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1d1638e89505bc1a3ae9189cd29141c.png)
![](https://img.xkw.com/dksih/QBM/2017/10/22/1800829558546432/1801560431689728/STEM/ad7010f7-58f1-4e31-b4f1-17f18bc06676.png?resizew=181)
您最近一年使用:0次
2017-10-23更新
|
991次组卷
|
3卷引用:江西省南昌市2018届高三上学期摸底数学理试题
名校
解题方法
3 . 如图,在矩形
中,
,
,
平面
,
分别为
的中点,点
是
上一个动点.
![](https://img.xkw.com/dksih/QBM/2017/12/14/1838504801681408/1840389586018304/STEM/af3fd602-59cb-43b2-9816-1733d58af966.png)
(1)当
是
中点时,求证:平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
平面
;
(2)当
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.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/52e13dcc51cd3a901cf25bd3c0d23588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2017/12/14/1838504801681408/1840389586018304/STEM/af3fd602-59cb-43b2-9816-1733d58af966.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/262b958cb704607cd5c0a92253de258e.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31904028b0e9284d0887be294bbd8add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c171fedd2b659c8b735c9ba2a501821.png)
您最近一年使用:0次
2017-10-17更新
|
1141次组卷
|
5卷引用:河南省漯河市高级中学2018届高三上学期第二次模拟考试数学(文)试题
4 . 如图,四边形
为矩形,
,
,
,
四点共面,且
和
均为等腰直角三角形,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/8baf80f3-6887-421f-9d02-ff5a48f70563.png?resizew=138)
(1)求证:平面
平面
;
(2)若平面
平面
,
,
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3814287dbb60d478bffc5366f9928b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b929a31d169a811004f0ecd6b7984e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aaab1426cea05dd8fdfa4aed6e5c3e6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/8baf80f3-6887-421f-9d02-ff5a48f70563.png?resizew=138)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4af8456b5e6f09e18f3aae55aee390dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa3254460ecbacecb3e57c5dce227f4.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ec3f44cd7f4689920e5df628177737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0cee0f36dc452e58086832c0152b641.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68744081315689b14c9c7a2b74100f46.png)
您最近一年使用:0次
2019-06-07更新
|
1391次组卷
|
7卷引用:2011届湖北省天门市高三天5月模拟理科数学试题
(已下线)2011届湖北省天门市高三天5月模拟理科数学试题【市级联考】2019年山东省烟台市高三3月(一模)数学试题(文)(已下线)2010-2011年云南省蒙自高级中学高一上学期期末考试数学试卷(已下线)2019年10月13日《每日一题》2020年高考理数一轮复习—— 每周一测江西省宜春市上高县第二中学2019-2020学年高二上学期10月月考数学(理)试题(已下线)专题8.4 直线、平面平行的判定及其性质(讲)-浙江版《2020年高考一轮复习讲练测》湖北省孝感市应城市第一高级中学2020-2021学年高二上学期暑期拓展摸底测试数学试题
名校
解题方法
5 . 已知四棱锥
的底面
为平行四边形,
平面
,
,
,
,
,
分别为
中点,过
作平面
分别与线段
相交于点
.
(1)在图中作出平面
,使平面
// 平面
,并指出P、Q的位置(不要求证明);
(2)若
,求二面角
的平面角大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb2e071d4e01107dcf7d95cbb86b415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bc2e11ba41dd6be2c30615229068a7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e0b64d25ddd18454f88e40c45d7d8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62718bb9eb6df7abeb6dcd9805b0b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389bc3f29c058067e06e0d0d2be399da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b37e6adf86f4e108cd5bae7d9d4941.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1b15a4605fce993cb13aefbf40360.png)
(1)在图中作出平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389bc3f29c058067e06e0d0d2be399da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389bc3f29c058067e06e0d0d2be399da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d923a338dd2d2e29336b42574d38448.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43e51b296d70944119042e560a7837db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db16410eb75958a577d7aa8a47fb88ad.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/17/04db700d-e35c-48b5-ab72-289e41e8b183.png?resizew=170)
您最近一年使用:0次
名校
6 . 如图,正三棱柱
中,侧棱
,
,
分别为棱
的中点,
分别为线段
和BE的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/18/a523556c-07f0-449f-a36b-15c4e40d0eab.png?resizew=257)
(1)求证:直线
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db57eca2a7cbd91bc57372592580a76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9debd13454918684cf8e07ce210516fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/18/a523556c-07f0-449f-a36b-15c4e40d0eab.png?resizew=257)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9df77527db5d65c2f4a0e7d308a52530.png)
您最近一年使用:0次
2017-06-02更新
|
1554次组卷
|
2卷引用:重庆市巴蜀中学2017届高三三诊考试理科数学试题
7 . 已知四棱锥
的底面为平行四边形,其中
平面
,且有
,
,
分别为
中点,过
作平面
分别与线段
相交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/14/4608fb88-ae03-4808-bb82-f13ab5722336.png?resizew=180)
(1)在图中作出平面
,使平面
平面
(不要求证明);
(2)若
,在(1)条件下求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb2e071d4e01107dcf7d95cbb86b415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619a5efe4b8a16399b1233b106a380a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/929fa05b0d1d2643776e0d09bf3fec44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62718bb9eb6df7abeb6dcd9805b0b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389bc3f29c058067e06e0d0d2be399da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b37e6adf86f4e108cd5bae7d9d4941.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1b15a4605fce993cb13aefbf40360.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/14/4608fb88-ae03-4808-bb82-f13ab5722336.png?resizew=180)
(1)在图中作出平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389bc3f29c058067e06e0d0d2be399da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b128fb1443444ec0ac6b33bce2dcb0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d923a338dd2d2e29336b42574d38448.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25596fd2ffa7811c0e2ac8c08961d41.png)
您最近一年使用:0次
2017-05-16更新
|
498次组卷
|
2卷引用:云南省昭通市2017届高三复习备考统一检测(第二次)文科数学试题
8 . 如图,梯形
中,
,四边形
为正方形,且平面
平面
.
![](https://img.xkw.com/dksih/QBM/2017/5/3/1679207875190784/1679967648169984/STEM/3c92a7e860e041be9f7e89b1b38b51b7.png?resizew=173)
(1)求证:
;
(2)若
与
相交于点
,那么在棱
上是否存在点
,使得平面
平面
?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/680257fb8074861e2e55b869e018774f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b6711e6dd48be6cf8fa52926924d21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2017/5/3/1679207875190784/1679967648169984/STEM/3c92a7e860e041be9f7e89b1b38b51b7.png?resizew=173)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1893d78af450a5fa09810537adc2dfa.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ede8e115c6e3e14e6740ed2c5f18e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ddbc01b823250362bc32ce2b11b0543.png)
您最近一年使用:0次
2017-05-04更新
|
966次组卷
|
3卷引用:山西省临汾市2017届高三考前适应性训练考试(三)数学(文)试题
9 . 如图,四棱锥
中,底面
是平行四边形,且平面
平面
,
为
的中点,
,
,
.
![](https://img.xkw.com/dksih/QBM/2017/3/12/1642373359001600/1642937952714752/STEM/d0143cb6501843bb8b2d220e7f88fff4.png?resizew=252)
(Ⅰ)求证:
平面
;
(Ⅱ)求证:平面
平面
.
![](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/6d077f6da8b2c00b152d4679aa2ed7f7.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/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb96e0331eebe80ed1ff610faf531fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/526908dfb46cf151b8ab1492a9d52047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://img.xkw.com/dksih/QBM/2017/3/12/1642373359001600/1642937952714752/STEM/d0143cb6501843bb8b2d220e7f88fff4.png?resizew=252)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30067b7b236d17af8a462f96a58d11bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
(Ⅱ)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
您最近一年使用:0次
2017-03-13更新
|
1789次组卷
|
6卷引用:2017届山东省济宁市高三3月模拟考试数学文试卷
名校
解题方法
10 . 如图,四棱锥
中,底面
是直角梯形,
,
,
,侧面
底面
,且
是以
为底的等腰三角形.
(Ⅰ)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a615c418bbc4a2c4f04fcf84cbb9ccb0.png)
(Ⅱ)若四棱锥
的体积等于
.问:是否存在过点
的平面
分别交
,
于点
,使得平面
平面
?若存在,求出
的面积;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5408641691fd27f6dd8cf0ab2043ad4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d05cf9c349a95b54fff7dffb062d31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec77a219cc6153d3483055ef82fc4b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebbb79892c8cb8871a08437acc09bc80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb4ba4f412edc7c3e78f2b6f292bc58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
(Ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a615c418bbc4a2c4f04fcf84cbb9ccb0.png)
(Ⅱ)若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/103070abee09399f1e9510a75c3ba9e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7d0b0a7af2341eb553c731290375c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30513ea48bc1ef3ae78adac83d894f14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad57e3727b7bbd795b05332fbf9649e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c71749ae69dfc2480f22a179b06e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3520ee9cc97a075e889e1625dba1157c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e32939dc30657dce64c79bc1ed77bf5.png)
![](https://img.xkw.com/dksih/QBM/2017/3/6/1637843765518336/1638126974500864/STEM/0aa98d6c477f4055940436e9ab4b7a51.png?resizew=233)
您最近一年使用:0次
2017-03-06更新
|
3234次组卷
|
5卷引用:2017届陕西省西安市铁一中学高三上学期第五次模拟考试文数试卷
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