如图,四棱锥
中,
平面
,
,
,
,
分别为线段
,
的中点.
平面
;
(2)求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95475bfc06e884754eb4a455c3f434e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fa6ea683971fa8b6299d7aab6d04092.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011abe509df00fe9410ab08b585ad7db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662698361c6b3ddaf0c28a3c87be53e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
2017高三·全国·专题练习 查看更多[14]
2018年高考数学(文科)二轮复习 精练:大题-每日一题规范练四川省乐山四校2017-2018学年高二第三学期半期联考数学(文科)试题2018-2019学年人教版高中数学选修1-2 模块综合评价(一)黑龙江省海林市朝鲜族中学人教版高中数学选修1-2同步练习:模块终结测评(一)(已下线)实战演练7.2-2018年高考艺考步步高系列数学(已下线)1.6.2 垂直关系的性质(课时作业)-2018版步步高学案导学与随堂笔记数学(北师大版必修2)广西南宁市马山县金伦中学4+N高中联合体2019-2020学年高二上学期期中考试数学试题安徽省铜陵市第一中学2019-2020学年高二上学期期中数学试题(已下线)专题23 空间点线面的位置关系-十年(2011-2020)高考真题数学分项辽宁省沈阳市第二中学2019-2020学年度下学期高一年级数学期末考试试题新疆乌鲁木齐市第八中学2018-2019学年高一下学期期末考试数学试题宁夏青铜峡市高级中学2021-2022学年高二上学期第一次月考数学(理)试题山西省运城市稷山中学2023届高三上学期月考(重组五)数学试题(已下线)专题23 立体几何解答题(文科)-1
更新时间:2021-03-28 15:45:40
|
相似题推荐
解答题-证明题
|
适中
(0.65)
解题方法
【推荐1】如图,四边形
为正方形,
平面
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/b2afeb13-c88b-4a00-8f3b-7ac3b3518fd6.png?resizew=157)
(1)证明:平面
平面
;
(2)证明:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/133659fd88416259e3b99eaf5751b98d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/541f54aae0dfb658ec0cd338e383cce0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/b2afeb13-c88b-4a00-8f3b-7ac3b3518fd6.png?resizew=157)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845b8505cb7b7b8df5753f52a4e00462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9111c8e64fc183a777dbe0e82c9202cd.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb178784aa857d4d4683e650273f054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f9801c57f2a881a807c3e85fb012f3.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
解题方法
【推荐2】如图,在多面体
中,四边形
是正方形,
是正三角形,
,
,
.
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573025185284096/1573025191321600/STEM/fff0b3427c6940a0b2ac776e11d9dc4f.png)
(1)求证:
平面
;
(2)求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f47d6a88e962cd790d2f159c021ec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a91478bb050c5f65793155c29ec27de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b2f042901f9931fcc9b418752261d87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b2a2acf383667b8ff3575fdeccc8e3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7579755d7d17bd72d97b03df323aefa4.png)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573025185284096/1573025191321600/STEM/fff0b3427c6940a0b2ac776e11d9dc4f.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c920d02068d0e63ffdab70786c526d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d93daae6ec80968c0630e229c1fa1b84.png)
(2)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f47d6a88e962cd790d2f159c021ec1.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,六面体
中,
,
,
,
,且
,
平面
.
![](https://img.xkw.com/dksih/QBM/2021/3/17/2679836714213376/2683165642457088/STEM/7dbee5ce0f044199b649b6219483112a.png?resizew=192)
(1)求证:
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30a5fd10ad58e6496f0832bafd1eeea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1f29a9fe6b23f79bacb7464e96b292.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec7045cee264e93b07cdf00012bd881a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ceea5e767823095e17d453b52197a4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6d168047340b7474e0f03cc73fe92b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2021/3/17/2679836714213376/2683165642457088/STEM/7dbee5ce0f044199b649b6219483112a.png?resizew=192)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70be49656c5446291ee51b45785d3aa4.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9164b2e81f55a5d9497ca50b5f8c9db6.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
解题方法
【推荐2】如图,在四棱锥
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2e1195854807c1aa8b361c77997892.png)
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
,
,
,
为
的中点.
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2e1195854807c1aa8b361c77997892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14fbecbb8960c9bf59475a3c0ad66213.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd6a2b112facda441f4e34bf5c145fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e713f0ba80e87438cf6273fb00cb81a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d79e7020414add95907e061df505ef0.png)
![](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/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次