1 . 如图,四边形
是等腰梯形,
,四边形
是矩形,
平面
,其中
分别是
的中点,
是
的中点.
![](https://img.xkw.com/dksih/QBM/2016/11/11/1573142612000768/1573142618300416/STEM/d40d3b32aaef4f9897e5cdbb4108dd33.png)
(1)求证:
平面
;
(2)
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75845d43ac1e32fb760ed15e38edea21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/398f834aceea15b09c942b05343ec8da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b927242223336dee4ae69314709172.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd6557072c6e3f2debbd1df5ef14ceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://img.xkw.com/dksih/QBM/2016/11/11/1573142612000768/1573142618300416/STEM/d40d3b32aaef4f9897e5cdbb4108dd33.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d46ae2beab3ae4c7dc414fc4951b1908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1f270df2479467e2c1e57ae58fddd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f491a794b9ac1a85a18c87ecee616c.png)
您最近一年使用:0次
2016-12-05更新
|
608次组卷
|
2卷引用:山西大学附属中学2017-2018学年高二上学期10月模块诊断数学(理)试卷
13-14高二上·河北石家庄·期中
2 . 如图,在四棱锥
中,底面
是矩形,侧棱
⊥底面
,
,
是
的中点,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2013/5/20/1571219475972096/1571219481542656/STEM/4a799c50e6d74e49abcf5e88dcb2bce1.png)
(1)证明:
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a060642ea62aa6439ff84689e0946fbe.png)
(2)若
为直线
上任意一点,求几何体
的体积;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6153163fecdf3f410411048428ccaef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d4c42112e0a22f240ce2ae432e5b4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44a77f32cf1348a047a50d3705e43bb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/2013/5/20/1571219475972096/1571219481542656/STEM/4a799c50e6d74e49abcf5e88dcb2bce1.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373f735f0f04d11f1951eaef1bb78b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a060642ea62aa6439ff84689e0946fbe.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1103675d9f040b44b9493dbf3341cd0f.png)
您最近一年使用:0次
2016-12-02更新
|
311次组卷
|
3卷引用:广东省广州市2017-2018学年高二上学期学业水平测模拟C卷数学试题
广东省广州市2017-2018学年高二上学期学业水平测模拟C卷数学试题(已下线)2012-2013学年河北省石家庄市第一中学高二上学期期中考试文科数学试卷安徽省定远县育才学校2017-2018学年高二下学期开学调研考试数学(文)试题
3 . 如图,在三棱柱
中,底面
是等边三角形,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
平面
,
为
的中点,
![](https://img.xkw.com/dksih/QBM/2017/8/19/1755663802613760/1757013381226496/STEM/e5d3ce16429e4830ba7f35ee5f0c3d55.png?resizew=165)
(Ⅰ) 求证:直线
平面
;
(Ⅱ) 若
是
的中点,求三棱锥
的体积;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2017/8/19/1755663802613760/1757013381226496/STEM/e5d3ce16429e4830ba7f35ee5f0c3d55.png?resizew=165)
(Ⅰ) 求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5830646a912c3a916beac4f88c116b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
(Ⅱ) 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea6694c7241a02cc8f4791aafa8e86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98f7123bbc27f7a1afb9d25b365c85ab.png)
您最近一年使用:0次
2017-04-09更新
|
982次组卷
|
3卷引用:黑龙江省大庆中学2016-2017学年高二下学期期末考试数学(文)试题
4 . 如图,菱形
与正三角形
的边长均为2,它们所在平面互相垂直,
⊥平面
,且
.
![](https://img.xkw.com/dksih/QBM/2017/2/10/1625063526621184/1625063527260160/STEM/76d4bfb6b1df45f59465815baaa981fe.png)
(1)若
,求证:
⊥
;
(2)若
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd2dcb2121af2b6d4ead458972439308.png)
![](https://img.xkw.com/dksih/QBM/2017/2/10/1625063526621184/1625063527260160/STEM/76d4bfb6b1df45f59465815baaa981fe.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ec435aa1401dbce7863b531bf2f3e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30d41255d37fab193323961d79fc94f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c4554df2d60bde7377c63aad1f0e7b.png)
您最近一年使用:0次
5 . 如图,线段
在平面
内,线段
,线段
,且
求线段
与平面
所成的角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b455b110a30c1533d0a0657e0e48ac33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa8089ef4b9af6a9c54fb8316837aee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0d57bcf84c83ba6d15312715c812411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/2017/4/14/1665671504011264/1666867507855360/STEM/61cddf7584b84223aee1938c8cf681ce.png?resizew=123)
您最近一年使用:0次
名校
6 . 如图,已知四棱锥
,
,侧面
是边长为4的等边三角形,底面
为菱形,侧面
与底面
所成的二面角为
.
![](https://img.xkw.com/dksih/QBM/2016/8/8/1572963715842048/1572963722166272/STEM/b86a7e1209ec444794f3654f50626938.png)
(1)求点
到平面
的距离;
(2)若
为
的中点,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5aa0d36da718de7c50a781b8e2bb8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a474e2642f068a920a5e1ad34582e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d923a338dd2d2e29336b42574d38448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d923a338dd2d2e29336b42574d38448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a21e7c3cd84ab1feddfbe9e6f5c11ab.png)
![](https://img.xkw.com/dksih/QBM/2016/8/8/1572963715842048/1572963722166272/STEM/b86a7e1209ec444794f3654f50626938.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](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/b3e276b4fa5902057bde925d2a501de2.png)
您最近一年使用:0次
2016-12-04更新
|
246次组卷
|
2卷引用:河北省邢台市第一中学2017-2018学年高二上学期第三次月考数学(理)试题
名校
7 . 设命题
:方程
表示的曲线是一个圆;
命题
:方程
表示的曲线是双曲线,若“
”为假,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3eaf44e8fac880eec239aa55846f767.png)
命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb6908cbcca19c67a92c97cb0589d1fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2017-02-23更新
|
416次组卷
|
4卷引用:2016-2017学年山东省德州市高二上学期期末检测数学(文)试卷
名校
解题方法
8 . 如图所示,在四棱锥
中,底面
为菱形,
为
与
的交点,
平面
,
为
中点,
为
中点.
(1)证明:直线
平面
;
(2)若点
为
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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eee296a7d9fba487f1485c61580196f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd3eb538f36e6e722e4ce125266b99b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7521aae829a66a85411906cab7c0c33a.png)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573022847942656/1573022853939200/STEM/e2fc12e1-efc7-4138-8bff-0ae02c5d59f8.png?resizew=199)
您最近一年使用:0次
2016-12-04更新
|
1086次组卷
|
4卷引用:河北省邢台市第一中学2017-2018学年高二上学期第一次月考数学(文)试题
9 . 在平面直角坐标系xOy中,设命题p:椭圆C:
的焦点在
轴上:命题
直线
与圆
有公共点.若命题
、命题
中有且只有一个为真命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6e423ad714d337a7a2135ed34359fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba61bb1a5f689b6f247d2c01d35e1c6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1243e97232811d82a3182785366fa1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a572ee7a7b9201802cc17a8f3632c465.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
10 . 已知两点
圆
以线段
为直径.
(Ⅰ)求圆
的方程;
(Ⅱ)若直线
:
与圆
相交于
两点,求弦
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/295c3ece9e4a63c9be4828e9b9fe356f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2346db5ec463dedc7700f629c9c0f16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(Ⅰ)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcaada7649455fbebcdbdbb9a94e6a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次