1 . 如图,在等腰梯形
中,
,四边形
为矩形,点
为线段
中点,平面
平面
.
![](https://img.xkw.com/dksih/QBM/2016/8/24/1572991698722816/1572991705088000/STEM/48929ff681ca4c4595bf2277f416bbae.png)
(1)求证:
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25b75d4140b41f6b1d808b8970abb25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbc56d42b003cbcb1fbe5c50e55b26b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2127f85b529b4bc8250f5b9d1341220e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2016/8/24/1572991698722816/1572991705088000/STEM/48929ff681ca4c4595bf2277f416bbae.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a0649dda28bec9dcc1bd746710f0c1d.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2730b513bd3359c3dfe6567e04f5ef9.png)
您最近一年使用:0次
解题方法
2 . 如图所示的多面体中,已知菱形
和直角梯形
所在的平面互相垂直,其中
为直角,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2016/10/24/1573093083774976/1573093090082816/STEM/a1ed0304424a4599bd85d8d9a6554714.png?resizew=255)
(1)求证:
平面
;
(2)求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4b93d7abcfc4c3df48f03aa969c17f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b400a6c61254b81d4ccc5a2a7cf4c967.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a24ee04b7e461c045431ce83d15a91de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e16bf977d7ea95a8113b64f1b86c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47c2da79b3cd03a0533dd3a0e2d31243.png)
![](https://img.xkw.com/dksih/QBM/2016/10/24/1573093083774976/1573093090082816/STEM/a1ed0304424a4599bd85d8d9a6554714.png?resizew=255)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
(2)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
您最近一年使用:0次
2016-12-04更新
|
409次组卷
|
2卷引用:2016届安徽省江南十校高三二模文科数学试卷
3 . 如图,在四棱锥
中,底面
是菱形,
,
与
交于点
.
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572669819297792/1572669825310720/STEM/65cab0def8944215b5bf9865939bb1bd.png)
(1)求证:
;
(2)若平面
平面
,
,求点
到平面
的距离.
![](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/8cb96e0331eebe80ed1ff610faf531fe.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572669819297792/1572669825310720/STEM/65cab0def8944215b5bf9865939bb1bd.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a062298f1db766c18c6ab0c64d5bfe63.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba9008f244e609ad267e10b8861c8254.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9bbc4be409b7da9d228041833e4b6a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89aa6172b55b9afb6ab78d972d6700c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
4 . 如图所示,四边形
是边长为2的菱形,且
,四边形
是正方形,平面
平面
,点
分别为边
的中点,点
是线段
上一动点.
![](https://img.xkw.com/dksih/QBM/2016/2/29/1572506936377344/1572506942750720/STEM/63df8afe79c6482d9a4ba4e6ac3fad76.png)
(1)求证:
;
(2)求三棱锥
的体积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d2fd16d9967444f475c1ddb4657810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/510ffacb305dd6b148414532e9d7c052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c0f067a2a348ceb24a408f82992eab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bc67cc4eb17a62a39d9105ca763a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/2016/2/29/1572506936377344/1572506942750720/STEM/63df8afe79c6482d9a4ba4e6ac3fad76.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3f4494ab2b11c4047842d97930790a.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5bfaf0099ca05e52612a08bab6ad1a9.png)
您最近一年使用:0次
5 . 如图,
是圆台上底面圆
的直径,
是圆
上不同于
的一点,
是下底面圆
上一点,过
的截面垂直与下底面,
为
的中点,又
.
![](https://img.xkw.com/dksih/QBM/2016/1/7/1572422554230784/1572422560505856/STEM/f87ff3078b5541ccad3606d31ae8e772.png)
(1)求证:
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25fba8c7f5406607c1a76c166682a99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4912447521918a9dbceb7087e74c27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ea61bd3527d296cb8775e3d5b26711.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45e5c2aaaf1cb0b400f3dc479aa4f87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de563063b301e90ed65ab2a4563317eb.png)
![](https://img.xkw.com/dksih/QBM/2016/1/7/1572422554230784/1572422560505856/STEM/f87ff3078b5541ccad3606d31ae8e772.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1f270df2479467e2c1e57ae58fddd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1823e8dc84f524af04ad8909af60b3ae.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5798a5ca58f64c54fe3066393df2a83c.png)
您最近一年使用:0次
2016-12-04更新
|
357次组卷
|
2卷引用:2015-2016学年安徽省蚌埠市二中高二上期中理科数学试卷
6 . 在如图所示的多面体
中,面
是边长为
的菱形,
,
,
面
,
,且
.
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572584036032512/1572584041889792/STEM/4c0e1539c1fb422bbf2ba816d067bea9.png)
(I)证明:
平面
;
(II)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20e38a1b5cfffd43a3405481a1d67cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c4c9080c1a87ece36994d63fea3131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90fb211f34523ab8b8809c2b9efb8a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f11e5b3ebac5f333e53ba46fb88f7fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e744a2d5ee025ce599d7241dcbba89fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4fcd27e5eacfa328372b6b0e41538f.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572584036032512/1572584041889792/STEM/4c0e1539c1fb422bbf2ba816d067bea9.png)
(I)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8badfeb9e7556486e02ab60df4dd32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(II)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffee8b7eff437080a0936d837ceabe95.png)
您最近一年使用:0次
7 . 如图,直四棱柱
的底面是等腰梯形,
,
,
分别是所在棱的中点.
![](https://img.xkw.com/dksih/QBM/2016/3/10/1572530220171264/1572530226282496/STEM/41118c9a788c4b2b873eb5da48c47d38.png)
(1)证明:平面
平面
;
(2)证明:
平面
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8456cee87c4e22351affc28f3a73a0f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34b746ff2fcb4711ea7c84e67c291935.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f77e5821b24a76c71fdc2cf59fbba308.png)
![](https://img.xkw.com/dksih/QBM/2016/3/10/1572530220171264/1572530226282496/STEM/41118c9a788c4b2b873eb5da48c47d38.png)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c38006e5058ac3b8b20356d5614363e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ecd8e274cebd92bd814ef7158b50fb.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ecd8e274cebd92bd814ef7158b50fb.png)
您最近一年使用:0次
名校
8 . 如图,三棱柱
中,侧棱垂直于底面,
,
,
是棱
的中点.
![](https://img.xkw.com/dksih/QBM/2017/11/9/1813333938069504/1816282728284160/STEM/5206d6808e074e1e8e0cfed253153cfa.png?resizew=216)
(Ⅰ)证明:平面
⊥平面
;
(Ⅱ)求异面直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed8f7d3d7043d4b1eb98fc5c4e2fcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/512cc5f78111d4592f6d843db6915f4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/2017/11/9/1813333938069504/1816282728284160/STEM/5206d6808e074e1e8e0cfed253153cfa.png?resizew=216)
(Ⅰ)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf9628142422a4884bd59538da6d312.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4739afd7311501e948aa4e1e5c1cb17.png)
(Ⅱ)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
您最近一年使用:0次
2016-12-04更新
|
792次组卷
|
9卷引用:2016届安徽省合肥一中高三下学期冲刺模拟文科数学A卷
9 . 如图,四棱锥
的底面是直角梯形,
,
,
和
是两个边长为
的正三角形,
,
为
的中点,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2016/6/30/1572850636652544/1572850642804736/STEM/d0f4f579289b40ce9de010fc01ba91c0.png)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6153163fecdf3f410411048428ccaef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/025a9f4217183c06f811ffd92d6f5aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aae7b9998141cd3bc6f7b653d8db69a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/159c8157f320a7bb15172236c909f26c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49437f474e5805688dff21ded2d1fd7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/2016/6/30/1572850636652544/1572850642804736/STEM/d0f4f579289b40ce9de010fc01ba91c0.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19807b67a48dedbd28fbb60dafd566d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218054144a13435580cd132b9459546c.png)
您最近一年使用:0次
10 . 如图,在四棱锥
中,底面
是直角梯形,侧棱
底面
,
垂直于
和
,
,
.
是棱
的中点.
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572579137347584/1572579143229440/STEM/36eea8c2257a4d26beb0e373afb9ce0e.png)
(1)求证:
平面
;
(2)求平面
与平面
所成的二面角的余弦值;
(3)设点
是直线
上的动点,
与平面
所成的角为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20dc940044210101ae8bbb17b37120c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34b0c4c783dd55685bd3e88bb31c6696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f5457bbeaaf4d6da96fc3ed2c6e61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34b0c4c783dd55685bd3e88bb31c6696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d86a0a3e867a448094f74a54a1fee64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b693717f525facc79b9a500ed998b109.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588a2119bc5e8cdf4731828b195a7892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f017bdeb820f8d9c6cd4ab5c8d678b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb1ae276659258455e7b41088b706e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f9c827e46d1a395fafbf15cdd6c6c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d8c67c8343701a69505477827538f72.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572579137347584/1572579143229440/STEM/36eea8c2257a4d26beb0e373afb9ce0e.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2cfb3721d007a9fcbc86a3919a11f74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24dd7a72d80ec9bb5db3e1537c291e97.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24dd7a72d80ec9bb5db3e1537c291e97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a14f2edcb16e66233e4ec720377d25.png)
(3)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f92c0005348ac35069a9fd56068da81.png)
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