名校
解题方法
1 . 如图,在四棱锥P﹣ABCD中,PD⊥平面ABCD,PD=2,DC=BC=1,AB=2,AB∥DC,∠BCD=90°.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/ba1e4bac-67c0-4c41-bf42-4b26991e1afc.png?resizew=139)
(1)求证:AD⊥PB;
(2)求A点到平面BPC的距离.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/ba1e4bac-67c0-4c41-bf42-4b26991e1afc.png?resizew=139)
(1)求证:AD⊥PB;
(2)求A点到平面BPC的距离.
您最近一年使用:0次
2020-05-18更新
|
430次组卷
|
2卷引用:2020届湖北省武汉市部分学校高三下学期5月模拟文科数学试题
2 . 如图,在四棱锥
中,底面
是梯形,
∥
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/841307db-6623-4b36-8516-9211a720bfe5.png?resizew=167)
(1)证明:平面
平面
;
(2)若
,
,求二面角
的余弦值.
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc41361c2eb352653ec5222abbc87ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccbd1316b9d1f0c1e71fd078deec61f6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/841307db-6623-4b36-8516-9211a720bfe5.png?resizew=167)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab2c27eac56fffa4cd7dbe1dcdf1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b58bbc02479917ad761a24eaae0dbfd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1069d514c3c32aeabd274475ee209ed6.png)
您最近一年使用:0次
2020-05-09更新
|
290次组卷
|
3卷引用:2020届湖北省武汉市武昌区高三下学期四月调研测试数学(理)试题
2020届湖北省武汉市武昌区高三下学期四月调研测试数学(理)试题湖北省鄂州市部分高中联考协作体2020-2021学年高二上学期期中数学试题(已下线)【新教材精创】11.4.2平面与平面垂直(1)练习(2)
解题方法
3 . 已知抛物线
和直线
,直线
恒过圆P的圆心,且圆P上的点到直线
的最大距离为2.
(1)求圆P的方程;
(2)直线
与抛物线C和圆P都相交,且四个交点自左向右顺次记为A、B、C、D.如果
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ac6188f40414f76bc754dee4a75809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a8d6991873e79b298984a95b8954b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)求圆P的方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb5fd72cc3d799d7d03d62866a89e42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
名校
解题方法
4 . 已知菱形
的边长为2,
,对角线
、
交于点O,平面外一点P在平面
内的射影为O,
与平面
所成角为30°.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/c0df93c2-f0a8-499f-9545-42527ec46933.png?resizew=154)
(1)求证:
;
(2)点N在线段
上,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/c0df93c2-f0a8-499f-9545-42527ec46933.png?resizew=154)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/712f7375b4ede5f75c0d81870c0f86af.png)
(2)点N在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d24c1d84cf8e619ae2f9127126253226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b1e52dfd144ab4afda4d4aa5a92c1f.png)
您最近一年使用:0次
2020-05-09更新
|
805次组卷
|
3卷引用:2020届湖北省宜昌市高三下学期4月线上统一调研测试数学(文)试题
2020届湖北省宜昌市高三下学期4月线上统一调研测试数学(文)试题2020届四川省泸县第五中学高三三诊模拟考试数学(文)试题(已下线)第08章+立体几何初步(B卷提高篇)-2020-2021学年高一数学必修第二册同步单元AB卷(新教材人教A版)
5 . 如图1,直角梯形
中,
,
,E、F分别是
和
上的点,且
,
,
,沿
将四边形
折起,如图2,使
与
所成的角为60°.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/8345f9bb-7b4d-4a59-b299-9f9393720fd1.png?resizew=368)
(1)求证:
平面
;
(2)M为
上的点,
,若二面角
的余弦值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c91baecb97fadd4f8ab49e6effcbc04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b0393ce62b24aa5f9b740d4cc6743b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a7d94248232b97c968056125b689106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/8345f9bb-7b4d-4a59-b299-9f9393720fd1.png?resizew=368)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/963a91995abd4927d75406d16e10a81f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a9b32570d553161be04d13954e92a1.png)
(2)M为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c742ec955b0d2314be4cc9897845e26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6306a5c48c6a2b30eb0c6548c1b99ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e468f168f3657d84d44be5eb89a62d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
6 . 如图,在四棱锥S﹣ABCD中,侧面SCD为钝角三角形且垂直于底面ABCD,
,点M是SA的中点,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/0b1d512a-660b-4937-b414-a678c2564ff6.png?resizew=187)
(1)求证:
平面SCD;
(2)若直线SD与底面ABCD所成的角为
,求平面MBD与平面SBC所成的锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7812ef34a2b02f9ce73952d5db2eee35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0254c51c4e3e5ca7190cb4cd97defbb5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/0b1d512a-660b-4937-b414-a678c2564ff6.png?resizew=187)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5928c98b341b16d4b5a5b931d2929d.png)
(2)若直线SD与底面ABCD所成的角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
您最近一年使用:0次
2020-05-07更新
|
198次组卷
|
2卷引用:2020届湖北省高三下学期4月高考模拟理科数学试题
解题方法
7 . 如图,在三棱柱ABC﹣A1B1C1中,A1A⊥平面ABC,∠ACB=90°,AC=CB=C1C=1,M,N分别是AB,A1C的中点.
![](https://img.xkw.com/dksih/QBM/2020/5/4/2455342760468480/2456713784918016/STEM/043672b815f94714a22f614c64bdbdc2.png?resizew=178)
(1)求证:直线MN⊥平面ACB1;
(2)求点C1到平面B1MC的距离.
![](https://img.xkw.com/dksih/QBM/2020/5/4/2455342760468480/2456713784918016/STEM/043672b815f94714a22f614c64bdbdc2.png?resizew=178)
(1)求证:直线MN⊥平面ACB1;
(2)求点C1到平面B1MC的距离.
您最近一年使用:0次
8 . 如图,在四棱锥S﹣ABCD中,侧面SCD为钝角三角形且垂直于底面ABCD,CD=SD,点M是SA的中点,AD//BC,∠ABC=90°,AB=AD
BC=a.
![](https://img.xkw.com/dksih/QBM/2020/5/3/2454546432114688/2455318000123904/STEM/ba3a1305-840c-4ce8-b169-caf00e5eaa1d.png)
(1)求证:平面MBD⊥平面SCD;
(2)若∠SDC=120°,求三棱锥C﹣MBD的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c70c0c5a061195b9941796b6a9acc4.png)
![](https://img.xkw.com/dksih/QBM/2020/5/3/2454546432114688/2455318000123904/STEM/ba3a1305-840c-4ce8-b169-caf00e5eaa1d.png)
(1)求证:平面MBD⊥平面SCD;
(2)若∠SDC=120°,求三棱锥C﹣MBD的体积.
您最近一年使用:0次
2020-05-04更新
|
311次组卷
|
4卷引用:2020届湖北省高三下学期4月高考模拟文科数学试题
2020届湖北省高三下学期4月高考模拟文科数学试题2020届湖北省高三下学期4月线上调研考试数学(文)试题河南省南阳市第一中学2019-2020学年高二下学期第三次月考(6月)数学(文)试题(已下线)专题20 立体几何综合-2020年高考数学(文)母题题源解密(全国Ⅱ专版)
名校
9 . 在平行四边形
中,
,
,
,
是EA的中点(如图1),将
沿CD折起到图2中
的位置,得到四棱锥是
.
![](https://img.xkw.com/dksih/QBM/2020/5/2/2453971677822976/2454901004050432/STEM/d5058c8c-a54b-40f9-9c97-196fb71047c7.png)
(1)求证:
平面PDA;
(2)若PD与平面ABCD所成的角为
.且
为锐角三角形,求平面PAD和平面PBC所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb5d56b5ef73dc6046f1a11e1e18919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c2761cf826c9f9850fb93071971a17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a05d97047e3a5c8e125d334d478ee8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6414089941feb5d8a4a6a49566b9ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b265d121f9ebc13671a5719604476a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://img.xkw.com/dksih/QBM/2020/5/2/2453971677822976/2454901004050432/STEM/d5058c8c-a54b-40f9-9c97-196fb71047c7.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
(2)若PD与平面ABCD所成的角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac8fe4026f1a0745ab9aa9fe64f0e482.png)
您最近一年使用:0次
2020-05-03更新
|
293次组卷
|
5卷引用:2020届湖北省荆门市高三下学期4月模拟考试理科数学试题
2020届湖北省荆门市高三下学期4月模拟考试理科数学试题2020届湖北省荆州中学、宜昌一中、龙泉中学三校联盟高三下学期4月联考理科数学试题西藏自治区拉萨市拉萨中学2019-2020学年高二第六次月考数学理科试卷(已下线)专题19 立体几何综合-2020年高考数学(理)母题题源解密(全国Ⅲ专版)重庆市万州第三中学2020-2021学年高二上学期期中数学试题
解题方法
10 . 如图,四棱锥P﹣ABCD中,已知PA⊥平面ABCD,△ABC为等边三角形,PA=2AB=2,AC⊥CD,PD与平面PAC所成角的余弦值为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/407760ea-6bdd-48a9-8eba-a217706b07f9.png?resizew=212)
(1)证明:
平面PAD;
(2)点M为PB上一点,且
,试判断点M的位置.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6265f5256804ccaff618cf8c0675eb8e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/407760ea-6bdd-48a9-8eba-a217706b07f9.png?resizew=212)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/963a91995abd4927d75406d16e10a81f.png)
(2)点M为PB上一点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b672b13e2551945ef81cdaf9e0d0dce3.png)
您最近一年使用:0次