名校
1 . 如图,四棱锥
中,底面
为平行四边形,
底面
,且
,
.
![](https://img.xkw.com/dksih/QBM/2017/11/25/1824658750365696/1825596991848448/STEM/0d911bc44d084732b6847775dc0c987f.png?resizew=175)
(1)求证:平面
平面
;
(2)如果
是棱
上的点,
是棱
上一点,
,且三棱锥
的体积为
,求
的值.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98e624e6ee68b796f70f9d35e78a8aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ac2e11788860424508ea9e80cf89d.png)
![](https://img.xkw.com/dksih/QBM/2017/11/25/1824658750365696/1825596991848448/STEM/0d911bc44d084732b6847775dc0c987f.png?resizew=175)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.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/bb4f47cccdb7195f15858fcfdf644214.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2329ab55ae9452449e058c89b3fc394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e6486784415f3537c9a13556c05d893.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced22fbe85d4a749c7b0b6bbae3ea3e7.png)
您最近一年使用:0次
2017-03-09更新
|
1775次组卷
|
3卷引用:2016-2017学年江西省南昌市第二中学高二下学期第一次阶段性考试数学(文)试卷
2 . 如图,矩形
垂直于正方形
垂直于平面
.且
.
![](https://img.xkw.com/dksih/QBM/2016/7/27/1572942094303232/1572942100291584/STEM/0a40237c-49cb-4fc3-9ba1-a0acdb49212f.png)
(1)求三棱锥
的体积;
(2)求证:面
面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cb7ca930e8c45396717ba3cffb072ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/474f973448be605221a2e2f183e624d4.png)
![](https://img.xkw.com/dksih/QBM/2016/7/27/1572942094303232/1572942100291584/STEM/0a40237c-49cb-4fc3-9ba1-a0acdb49212f.png)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4424a0a247335533262d73c63266430.png)
(2)求证:面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddc3fec8696dfed93bb1ea269e0ac947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
您最近一年使用:0次
2016-12-04更新
|
1513次组卷
|
8卷引用:江西省赣州市第四中学2017届高三上学期第三次月考数学(文)试题
名校
3 . 正方体
中,
分别为棱
和
的中点.求
![](https://img.xkw.com/dksih/QBM/2017/3/30/1654818782445568/1656209744281600/STEM/b594f3be10034b39b051aa5db1462901.png?resizew=182)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a696a182fff038a86b2bbe8ca099442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1859959fdb4c5edd8056893f94a10a0.png)
![](https://img.xkw.com/dksih/QBM/2017/3/30/1654818782445568/1656209744281600/STEM/b594f3be10034b39b051aa5db1462901.png?resizew=182)
(I)异面直线与
所成的角的正切值;
(II)异面直线与
所成角的余弦值.
您最近一年使用:0次
2017-04-01更新
|
1227次组卷
|
3卷引用:2016-2017学年江西省南昌市第二中学高二下学期第一次阶段性考试数学(理)试卷
4 . 如图,在三棱柱
中,侧棱垂直于底面,
,
,
,
为
的中点,
分别为
上的中点.
![](https://img.xkw.com/dksih/QBM/2017/11/10/1814292395573248/1815464619171840/STEM/bcfbe74d458b4547adb2003c04d366f2.png?resizew=186)
(1)求证:平面
平面
;
(2)求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.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/2017/11/10/1814292395573248/1815464619171840/STEM/bcfbe74d458b4547adb2003c04d366f2.png?resizew=186)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5f0cfc1049f84a04c81bd213afb8d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f96c673a2381f118ea2d3efc0bca1f3.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0447e46f2d9b39960ae1f1294ed8a2f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
您最近一年使用:0次
2017-11-12更新
|
667次组卷
|
2卷引用:江西省赣州市十四县(市)2017-2018学年高二期中联考数学(文)试卷
名校
解题方法
5 . 如图,四棱锥
中,平面
平面
,底面
为梯形.
,且
与
均为正三角形.
为
的中点
为
重心,
与
相交于点
.
![](https://img.xkw.com/dksih/QBM/2018/4/13/1923321569042432/1924002446860288/STEM/31f6bf63-2e9a-44c8-badd-1839f98173cb.png)
(1)求证:
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.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/f24a69ba92e98ff1f7ff70735de74fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f49a50342d18a16a2cd80773f35cab7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21650bc78507072e6cd5de5ffb8af321.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb961bd7db3adb76af2d4cedb611bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b5a63f7b97ef26456c65539fec2b0c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9026fbd7897d459b4d559a4b99f2e41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48001497183e96bfb16ba4199716c3c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2018/4/13/1923321569042432/1924002446860288/STEM/31f6bf63-2e9a-44c8-badd-1839f98173cb.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0589b6dcbacda58c88b594a3abe72461.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dda09fb28b8f1e165715cca61d64f9c1.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ee43a0d62e3fc2f4a76a074ad5488d7.png)
您最近一年使用:0次
2018-04-14更新
|
600次组卷
|
8卷引用:2017届江西省南昌市高三第一次模拟考试数学(文)试卷2
6 . 在四棱锥
中,底面
为平行四边形,
,
,
,
.
(Ⅰ)证明:
平面
;
(Ⅱ)求点
到平面
的距离.
![](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/f8f60f51f795e6688651f5fac8e5b385.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed5640a8df01d0c937c4c0c964906e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/832ad9f9ccef5b9f18f44f61209b7a4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/652269dc9c3f48536c17c11b3293fbc1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/56d54b0b-75fc-401d-91dd-734b18699d32.png?resizew=158)
(Ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5928c98b341b16d4b5a5b931d2929d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d923a338dd2d2e29336b42574d38448.png)
(Ⅱ)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9c9cfa597b444b5c9dbae7a825a695.png)
您最近一年使用:0次
2017-04-14更新
|
1149次组卷
|
4卷引用:江西省宜春市丰城九中、高安二中、宜春一中、万载中学、樟树中学、宜丰中学2017届高三六校联考数学(文)试题
名校
解题方法
7 . 如图,
是底面边长为2,高为
的正三棱柱,经过
的截面与上底面相交于
, 设
.
(1)证明:
;
(2)当
时,在图中作出点C在平面
内的正投影
(说明作法及理由),并求四棱锥
表面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d439d2495c2892a027defb2c0af9de84.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084a603339538b09f310e3c18cbeb3c9.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe83f1ae7e5f05d8bed6bf6f42db0e7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76abe46a47830d6b15e7b7fda18bf0d1.png)
![](https://img.xkw.com/dksih/QBM/2017/2/28/1633793164271616/1634656375914496/STEM/45dc158673844033873074125a9e0f28.png?resizew=196)
您最近一年使用:0次
8 . 如图所示,在等腰梯形
中,
,
,
,将三角形
沿
折起,使点
在平面
上的投影
落在
上.
![](https://img.xkw.com/dksih/QBM/2017/6/3/1700928152256512/1703835771019264/STEM/0e92265a6fa14f26956fec2f4160e7c1.png?resizew=351)
(1)求证:平面
平面
;
(2)若点
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/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3dcff17ff1131f259889507e729d0c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05740f0c6071846227dc0ec177ad15e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/2017/6/3/1700928152256512/1703835771019264/STEM/0e92265a6fa14f26956fec2f4160e7c1.png?resizew=351)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17580410bf63dba4fe164265afaac4cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
(2)若点
![](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/90dae748020ce1376c578251a6ce3903.png)
您最近一年使用:0次
2017-04-20更新
|
1032次组卷
|
5卷引用:2017届江西省赣州市十四县(市)高三下学期期中联考数学(文)试卷
名校
9 . 已知圆
:
关于直线
:
对称的圆为
.
(Ⅰ)求圆
的方程;
(Ⅱ)过点
作直线
与圆
交于
,
两点,
是坐标原点,是否存在这样的直线
,使得在平行四边形
(
和
为对角线)中
?若存在,求出所有满足条件的直线
的方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c653bc211147574b2320012450ccedae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa6342e0a5a8942cfb1cf535ceb2c50d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅰ)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7cd70eb2e93cafd9aa2a8b828044d39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15d275681cf12af6fe3824d56b416ffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d66b83d9dbcb45e1c241d18a3e1843f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1675bf2cdfdbfcbb24258d265c39b7d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2017-12-27更新
|
615次组卷
|
8卷引用:江西省赣州市十四县2017-2018学年高二期中联考数学理科试卷
8-9高二上·四川雅安·期中
真题
名校
10 . 自点
发出的光线
射到
轴上,被
轴反射,其反射光线所在直线与圆
相切,求光线
所在直线的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5aef61ce8e1bd0b2b9e55f2038df59b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dcfd415200d3f45ca01c674c8ad47b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2016-12-02更新
|
1441次组卷
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17卷引用:江西省南昌市八一中学、洪都中学、麻丘高中等六校2017-2018学年高二10月联考数学试题
江西省南昌市八一中学、洪都中学、麻丘高中等六校2017-2018学年高二10月联考数学试题(已下线)2012-2013学年江西省赣州市十一县高二上学期期中联考文科数学试卷陕西省黄陵中学2016-2017学年高一(普通班)下学期第四学月考试数学试题安徽省全椒中学2017-2018学年高一第一学期期中考试数学试题(已下线)2011-2012学年四川省汉源县第一中学高二上学期期中理科数学试卷(已下线)2012届广东省肇庆市封开县南丰中学高三数学复习必修2模块测试试卷D卷(已下线)2012-2013学年山东济宁市鱼台一中高二上学期期中考试文科数学试卷人教版 全能练习 必修2 第二章 2.3 直线与圆、圆与圆的位置关系新疆石河子第二中学2018-2019学年高一下学期第一次月考数学试题人教B版(2019) 选修第一册 学习帮手 第二章 2.3.3 直线与圆的位置关系(第一课时)甘肃省金昌市永昌县第一高级中学2020-2021学年高二上学期第一次月考数学(文)试题甘肃省金昌市永昌县第一高级中学2020-2021学年高二上学期第一次月考数学(理)试题第四章 第二节4.2直线、圆的位置关系1989年普通高等学校招生考试数学(理)试题(全国卷)(已下线)2.6 直线与圆、圆与圆的位置关系湘教版(2019)选择性必修第一册课本习题 习题2.6(已下线)考点03 对称问题及其应用 2024届高考数学考点总动员