名校
解题方法
1 . 在直三棱柱
中,
,延长
到
,使
,连结
,得到多面体
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/18/c0649f53-6fe9-4239-8690-7a9b86cb856b.png?resizew=240)
(1)证明:
平面
;
(2)若
,
,求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ddd49625097d0a78df7170be4f882e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa265e6bf764ba99120bf8858fc29cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b1dd0fbfc62602b496a1ddce721d94.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/18/c0649f53-6fe9-4239-8690-7a9b86cb856b.png?resizew=240)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/504a36c231b8e80724d01649e7c0944f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee3d1518e197f7f25c341da6b1e3483.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58899f5c3638f1e32274137723f99836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92105835f8075cb75dff244e908370b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b1dd0fbfc62602b496a1ddce721d94.png)
您最近一年使用:0次
2017-06-18更新
|
726次组卷
|
2卷引用:贵州省凯里市第一中学2016-2017学年高二下学期自主学习效果检测数学(文)试题
2010·广东汕头·一模
解题方法
2 . 如图,△ABC内接于圆O,AB是圆O的直径,
,
,设AE与平面ABC所成的角为
,且
,四边形DCBE为平行四边形,DC
平面ABC.
(1)求三棱锥C-ABE的体积;
(2)证明:平面ACD
平面ADE;
(3)在CD上是否存在一点M,使得MO∥平面ADE?证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb57c016d0f0e8585f06dcbf28c619e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
(1)求三棱锥C-ABE的体积;
(2)证明:平面ACD
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
(3)在CD上是否存在一点M,使得MO∥平面ADE?证明你的结论.
![](https://img.xkw.com/dksih/QBM/2010/6/27/1569774642102272/1569774647476224/STEM/eabffbe19862461880421370e11cbd12.png?resizew=203)
您最近一年使用:0次
解题方法
3 . 如图,在四棱锥
中,
底面
,
,
,
,
与底面成
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/26/c6ce9510-5d54-43d8-a4ed-ab527cd3971a.png?resizew=166)
(1)求证:
∥平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6037bba27008abc96a6dba99753549ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38dc16842b3891560b9d34c7b817f9cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/26/c6ce9510-5d54-43d8-a4ed-ab527cd3971a.png?resizew=166)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7628ad58e0832bbf636e04be8b9cbfe.png)
您最近一年使用:0次
解题方法
4 . 如图,正方体ABCD-A1B1C1D1的棱长为1,线段B1D1上有两个动点E,F,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/8db9f07b-9037-466d-ad94-42225e63e642.png?resizew=162)
(1)AC⊥BE;
(2)EF//平面ABCD.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f115f2683c0422042f1846450885e7fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/8db9f07b-9037-466d-ad94-42225e63e642.png?resizew=162)
(1)AC⊥BE;
(2)EF//平面ABCD.
您最近一年使用:0次
2012·河北衡水·一模
解题方法
5 . 如图,已知正方形
的边长为1,
平面
,
平面
,
为
边上的动点.
(1)证明:
平面
;
(2)试探究点
的位置,使平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a36f7e5128bcf12583792fe8a4a4d8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/477dc280b77f5640565dbc0ddf24460a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3bb264c58fed0fcbe49d9a854c9810c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb841d975d5c7ab05598040e99df6825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a87e6b1915ffd6bdb85808ec6a15e1cc.png)
(2)试探究点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dd7e30b2eff37f1b78146dc80b151ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://img.xkw.com/dksih/QBM/2012/2/27/1570775853023232/1570775858266112/STEM/0c30fdb1bd36465c8724f7e7bde7b877.png?resizew=269)
您最近一年使用:0次
名校
6 . 在正方体
中,
,
分别是
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/15/34776a3c-9b1b-4ccf-a2ae-ca1d87da9919.png?resizew=169)
(1)求证:
平面
;
(2)作出二面角
的平面角,并求出它的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/15/34776a3c-9b1b-4ccf-a2ae-ca1d87da9919.png?resizew=169)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
(2)作出二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa4c2dcb9bb6b53f37e7241186a189b.png)
您最近一年使用:0次
2020高三下·全国·专题练习
解题方法
7 . 如图,四棱锥S-ABCD中,SD⊥平面ABCD,AB∥CD,AD⊥CD,SD=CD,AB=AD=2,CD=2AD,M是BC的中点,N是SA的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/c6a43924-1629-4dcf-b16b-dc351d742cf8.png?resizew=144)
(1)求证:MN∥平面SDC;
(2)求点A到平面MDN的距离.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/c6a43924-1629-4dcf-b16b-dc351d742cf8.png?resizew=144)
(1)求证:MN∥平面SDC;
(2)求点A到平面MDN的距离.
您最近一年使用:0次
名校
解题方法
8 . 已知五边形
是由直角梯形
和等腰直角三角形
构成,如图所示,
,
,
,且
,将五边形
沿着
折起,且使平面
平面
.
(1)若
为
中点,边
上是否存在一点
,使得
平面
?若存在,求
的值;若不存在,说明理由;
(2)求四面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d5427b7b994b860628df3d6b7a07de8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/896c5c86af13f1f392de3cc904af1e9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48732e80ec3c3b6de906d598c69840d5.png)
(2)求四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49c2bd5eaf71f8866c0979fa299df50d.png)
![](https://img.xkw.com/dksih/QBM/2017/4/16/1667146020331520/1667968753672192/STEM/2aa17cb3624547afbaecfacd2ed1ccfb.png?resizew=304)
您最近一年使用:0次
9 . 如图,四棱锥P﹣ABCD中,PA⊥平面ABCD,底面ABCD为直角梯形,∠ABC=∠BAD=90°,AD>BC.E,F分别为棱AB,PC上的点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/a2d8e943-81b4-448b-ad27-a5b321ff0104.png?resizew=231)
(1)求证:平面AFD⊥平面PAB;
(2)若点E满足
,当F满足什么条件时,EF∥平面PAD?请给出证明.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/a2d8e943-81b4-448b-ad27-a5b321ff0104.png?resizew=231)
(1)求证:平面AFD⊥平面PAB;
(2)若点E满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7236f027c492eaaa05a6fbfca17e854.png)
您最近一年使用:0次
解题方法
10 . 如图,在四面体
中,平面
平面
,
,
,
分别为
,
,
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/2017/5/12/1685474831319040/1685618495414272/STEM/3a30ba4301dd4742b8729675934bf886.png?resizew=234)
(1)求证:
平面
;
(2)若
为
上任一点,证明:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf410aab32ba002b2c4e7343e7efd4c4.png)
![](https://img.xkw.com/dksih/QBM/2017/5/12/1685474831319040/1685618495414272/STEM/3a30ba4301dd4742b8729675934bf886.png?resizew=234)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6541c0cb89f08aa4c937c0beb915e0a7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c38413d086b38c176ed8c5b882d17641.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
您最近一年使用:0次