名校
1 . 如图,在多面体
中,四边形
为菱形,且
,在四边形
中,
,
,
,
,M为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/4b3fe175-1d6c-4d7c-8988-74a138b0212b.png?resizew=168)
(1)证明:直线
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8139d9fd5c670c91aa7dc485366dd1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597221bdc3fdacf0b653e447330df351.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd207cb9f97e04f6777686edfe46b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5beb1af9d2ffb7d0089dec2c1af554da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/4b3fe175-1d6c-4d7c-8988-74a138b0212b.png?resizew=168)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d32e76582bf550593fdef53e081225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2977ae4bfa32de8c6f0fb136205c4fe7.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
您最近一年使用:0次
2011·江西·一模
2 . 已知直角梯形ABCD中,AB∥CD,
,过A作AE⊥CD,垂足为E,G、F分别为AD、CE的中点,现将△ADE沿AE折叠,使得DE⊥EC.
(1)求证:FG∥面BCD;
(2)设四棱锥D﹣ABCE的体积为V,其外接球体积为
,求V:
的值.
![](https://img.xkw.com/dksih/QBM/2011/4/11/1570115166052352/1570115171434496/STEM/2fc384d69ace4062a896c5d703d8e8bd.png?resizew=298)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4133a08eb2a070de58b5344406c10f27.png)
(1)求证:FG∥面BCD;
(2)设四棱锥D﹣ABCE的体积为V,其外接球体积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6618ee2b75cea58378952b419322d635.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6618ee2b75cea58378952b419322d635.png)
![](https://img.xkw.com/dksih/QBM/2011/4/11/1570115166052352/1570115171434496/STEM/2fc384d69ace4062a896c5d703d8e8bd.png?resizew=298)
您最近一年使用:0次
名校
解题方法
3 . 如图,四棱锥
的底面为矩形,平面
平面
,点
在线段
上,且
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/8fc2edec-df81-4664-aea2-e05f06836578.png?resizew=191)
(1)求证:
平面
;
(2)若点
是线段
上靠近
的三等分点,点
在线段
上,且
平面
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448cbac9a1ef3de7538a6b30cdc39582.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/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662698361c6b3ddaf0c28a3c87be53e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc6f6dfdbe7d39891c35f67e1a95c7f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/8fc2edec-df81-4664-aea2-e05f06836578.png?resizew=191)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf3ed98e3e2d1fae530dbeffc3ff3d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5885ebe4cc091ac2085df704ef9c0bb.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/defa5b53043ae802bb1af7d14374406d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c4b785665fe1f203c853d584d4956b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
12-13高三上·浙江台州·阶段练习
4 . 右图为一简单组合体,其底面ABCD为正方形,
,
且PD=AD=2EC=2,
(1)求证:
平面
;(2)求PA与平面PBD所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d66e834d5a04a5ffc5bbeff424f537.png)
![](https://img.xkw.com/dksih/QBM/2012/1/2/1570671644237824/1570671649726464/STEM/b9da660cdb4a4a8eb20715c3c8290f3a.png?resizew=62)
且PD=AD=2EC=2,
(1)求证:
![](https://img.xkw.com/dksih/QBM/2012/1/2/1570671644237824/1570671649726464/STEM/e18f26f53d8f496eb080615724b0daee.png?resizew=37)
![](https://img.xkw.com/dksih/QBM/2012/1/2/1570671644237824/1570671649726464/STEM/89aa59639c1f4ffb88e59bfd81f215c1.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2012/1/2/1570671644237824/1570671649726464/STEM/19ba9f251e6f4bd9b1f4c94a3de1e95b.png?resizew=227)
您最近一年使用:0次
解题方法
5 . 如图,四棱锥
中,底面
是边长为3的菱形,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d4e574c9d139615d991a168cfbf63b.png)
,
面
,且
,E为
中点,F在棱
上,且
.
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990343680/STEM/4c5a169d09d643419119c0b4b6024bfb.png?resizew=214)
(1)求证:
面
;
(2)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/26d4e574c9d139615d991a168cfbf63b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.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/491c3a4f72b84ebadd28b90711435adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0cee0f36dc452e58086832c0152b641.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990343680/STEM/4c5a169d09d643419119c0b4b6024bfb.png?resizew=214)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d27ff0b39832f094ec51e28721d739.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8768996ca9a0f2c5d9a19abbd54df.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05479ce59da01ea9c5bef3f20efadb41.png)
您最近一年使用:0次
解题方法
6 . 如下图,四棱锥
中,底面
是矩形,
平面
,且
,
,
,
是线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/27/8a9fe8dc-43be-4e42-bce7-eb854f21d6a9.png?resizew=265)
(1)求证:平面
平面
;
(2)若
是线段
的中点,在线段
上是否存在一点
,使得
平面
?若存在,求出线段
的长度;若不存在,说明理由.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.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/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab2c27eac56fffa4cd7dbe1dcdf1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/27/8a9fe8dc-43be-4e42-bce7-eb854f21d6a9.png?resizew=265)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e92c3dbf9981a81f4093c9760943e21c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fbbe7f48676298f2ee0cb1901992eaf.png)
(2)若
![](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/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8badfeb9e7556486e02ab60df4dd32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fbbe7f48676298f2ee0cb1901992eaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
您最近一年使用:0次
名校
解题方法
7 . 在正方体
中.
![](https://img.xkw.com/dksih/QBM/2019/6/7/2220499513712640/2221089699241984/STEM/d64269675fca4533a7deea17e368ce25.png?resizew=154)
(1)若
为棱
上的点,试确定点
的位置,使平面
;
(2)若
为
上的一动点,求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd4cf99a0d5833beacc3a0ee39d39458.png)
![](https://img.xkw.com/dksih/QBM/2019/6/7/2220499513712640/2221089699241984/STEM/d64269675fca4533a7deea17e368ce25.png?resizew=154)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db4ee628f1f5b2c224e4e9a759ffc305.png)
(2)若
![](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/4ba8f7af0e091e082100c3cd7f8c487f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/349740b9aa8c242258eb07cb7224c3f6.png)
您最近一年使用:0次
2016-12-03更新
|
817次组卷
|
2卷引用:2015-2016学年四川省雅安中学高二10月月考数学试卷
8 . 在如图所示的圆台中,
是下底面圆
的直径,
是上底面圆
的直径,
是圆台的一条母线.
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573021933821952/1573021939400704/STEM/d8dfa2d9ecab4a0bac28eb4cb0ea2d11.png)
(1)已知
分别为
的中点,求证:
;
(2)已知
,
,求二面角
的余弦值.
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573021933821952/1573021939400704/STEM/c2026a00dac745a68d4be98ea57eb968.png)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573021933821952/1573021939400704/STEM/a994fec3fcf7465893f75c85217ef6ed.png)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573021933821952/1573021939400704/STEM/0417464253404fc491a1b3f2c534446d.png)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573021933821952/1573021939400704/STEM/315207c4cfdc43f487d79597ecc3af03.png)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573021933821952/1573021939400704/STEM/59ae6b20c1c44748857ac45f52020115.png)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573021933821952/1573021939400704/STEM/d8dfa2d9ecab4a0bac28eb4cb0ea2d11.png)
(1)已知
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573021933821952/1573021939400704/STEM/9421fba81f044da9927d1133821ca8b1.png)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573021933821952/1573021939400704/STEM/33636cafc63c46508c6d51a7dd3e22d5.png)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573021933821952/1573021939400704/STEM/3b5afd95420043b48d0f0b9ce314d996.png)
(2)已知
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573021933821952/1573021939400704/STEM/1018033148a743d9a84f8b7d80c4a7fa.png)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573021933821952/1573021939400704/STEM/c6d9212110084093b3757a8bc01a3f03.png)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573021933821952/1573021939400704/STEM/757b3eb9e96f4cf98b32ada934b17a44.png)
您最近一年使用:0次
12-13高一上·北京·期末
解题方法
9 . 在四棱锥
中,底面
是直角梯形,
,
,
,平面
平面
.
(1)求证:
平面
;
(2)求平面
和平面
所成二面角(小于
)的大小;
(3)在棱
上是否存在点
使得
平面
?若存在,求
的值;若不存在,请说明理由.
![](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/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0073c8e806d0399a6983e163f0fd176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1b489c25405ce48699d4f0a62820bed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06ba22238cdff318a4bd9d4d746b3229.png)
(3)在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5865d488a9cf1181016fd2e866177cdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b505e0df1131e3a93fc81d13f6e224e7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/16/fa4fd412-897c-4621-b148-dc248d6cc7a6.png?resizew=135)
您最近一年使用:0次
2016-12-02更新
|
651次组卷
|
5卷引用:2011-2012学年北京市育园中学高一第一学期期末考试数学
(已下线)2011-2012学年北京市育园中学高一第一学期期末考试数学(已下线)2011-2012学年北京市海淀区高三上学期期末考试理科数学(已下线)2013届天津市天津一中高三第三次月考理科数学试卷北京西城回民中学2018届高三上期中数学(理)试题北京市东城区2018届高三上学期期中考试数学试题
10-11高三·广东·阶段练习
解题方法
10 . 图为一简单几何体,其底面ABCD为正方形,
平面
,
,且
,
![](https://img.xkw.com/dksih/QBM/2011/3/11/1570037139185664/1570037144535040/STEM/7d70b4fb4df749eb8934013cd0fef93b.png?resizew=187)
(1)求证:
//平面
;
(2)若N为线段
的中点,求证:
平面
;
![](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/fc6b593f5b249e1a4aa013d493670bdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7edfcd7a7efd029192202a021753ed5.png)
![](https://img.xkw.com/dksih/QBM/2011/3/11/1570037139185664/1570037144535040/STEM/7d70b4fb4df749eb8934013cd0fef93b.png?resizew=187)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564376a88fa74090de9f7694226a6184.png)
(2)若N为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa00966462971fe7856c033f8cb1b821.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ca5b5fd1031438de2d2dd59be8c348.png)
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