名校
解题方法
1 . 如图,在直三棱柱
中,
,D为
的中点,
为
上一点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/7b540f5d-3dc2-46e0-ac77-f59f0630156c.png?resizew=154)
(1)证明:
∥平面
;
(2)若
,
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d798b7b2ca788ec08967358c271406f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/7b540f5d-3dc2-46e0-ac77-f59f0630156c.png?resizew=154)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b886daa3c9bb7153acd9f651f99eb2c1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4195ed4a942092a90895d5e70e713a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b886daa3c9bb7153acd9f651f99eb2c1.png)
您最近一年使用:0次
2023-05-04更新
|
1514次组卷
|
6卷引用:名校教研联盟2023届高三联考(三)文科数学试题
解题方法
2 . 如图,三棱柱
的所有棱长均为1,且点
在底面上的射影是AC的中点D.
与
交于点E,
与
交于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/6/2dd38a9a-4563-428c-997e-476bbce54d07.png?resizew=208)
(1)证明:
;
(2)求几何体ABCFE的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/6/2dd38a9a-4563-428c-997e-476bbce54d07.png?resizew=208)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f35646cb29fafd1e1a214b69e4f22d.png)
(2)求几何体ABCFE的体积.
您最近一年使用:0次
2023-05-03更新
|
347次组卷
|
2卷引用:文科数学-【名校面对面】河南省三甲名校2023届高三校内模拟试题(六)
解题方法
3 . 如图(1),点E是直角梯形ABCD底边CD上的一点,∠ABC=90°,BC=CE=1,AB=DE=2,将
沿AE折起,使得D-AE-B成直二面角,连接CD和BD,如图(2).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/30/051f223f-f96f-4fdc-8431-d2f847ff0466.png?resizew=328)
(1)求证:平面
平面BCD;
(2)在线段BD上确定一点F,使得
平面ADE.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63b43490ca09467a4c8cd8cfe91c94e4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/30/051f223f-f96f-4fdc-8431-d2f847ff0466.png?resizew=328)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
(2)在线段BD上确定一点F,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d3c1df7fcce1d25c44a06a9f168fa.png)
您最近一年使用:0次
解题方法
4 . 如图所示,四棱柱
中,
平面
,
,点
在
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/7/a858cdd7-b54f-47bd-a4be-63a00e170c76.png?resizew=187)
(1)若四边形
为平行四边形,求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
平面
;
(2)若点F在BD上,
,
,
,
,求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af6ab0386dde0643de8caf33f946072f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd5a4fffd24f8f66d680811e6ffcbf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f182c605c5b0c7e50b2cf2596d50d1c9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/7/a858cdd7-b54f-47bd-a4be-63a00e170c76.png?resizew=187)
(1)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae7f4612c548b1f72a964ddb291cd2e.png)
(2)若点F在BD上,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d459cad63e3cd2aba10862800fa4832.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78192b9e9d4e38175e840233749443bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c545be1051b20aea348bc99505c27022.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a96b5cd06f51fe01e8289f95033f36ab.png)
您最近一年使用:0次
2023-04-06更新
|
285次组卷
|
2卷引用:2023届高三冲刺卷(一)全国卷文科数学试题
解题方法
5 . 四棱锥
中,
面
,
,底面ABCD中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/8/48f261d4-405d-4a45-a8f3-f10151e90cfa.png?resizew=182)
(1)若点
在线段
上,试确定
的位置,使面
面
,并给出证明;
(2)若
,求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a38e6c6dfde2b19b6b47f35a439a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8257b6bd25104e07b9ad935c0a3aac4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/503668fcc7878c81c664c13fa47cba29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294fb71e831973702fccfd58b94c5e52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc01b1ea3c7efd39d1454d408040d74b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/8/48f261d4-405d-4a45-a8f3-f10151e90cfa.png?resizew=182)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f6dd051db98c531f9ef18cdfd793f4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68004768b879c6a052f45a2c45217cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
您最近一年使用:0次
解题方法
6 . 在四棱锥
中,底面
是边长为6的菱形,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/0623ffed-7778-47a4-aa84-f75d49c5066f.png?resizew=245)
(1)证明:
平面
;
(2)若
,M为棱
上一点,满足
,求点
到平面
的距离.
![](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/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d0710321d97361e5782124bbf7f0c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d9ef979b9f27a28cbda6923e888ccc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/0623ffed-7778-47a4-aa84-f75d49c5066f.png?resizew=245)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5928c98b341b16d4b5a5b931d2929d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/491c3a4f72b84ebadd28b90711435adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b23202c2f1f1b4aad3515d785ef64d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af29254fe60a392c249c5791279e9c8.png)
您最近一年使用:0次
2023-03-24更新
|
1030次组卷
|
4卷引用:四川省南充市2023届高考适应性考试(二诊)文科数学试题
名校
解题方法
7 . 如图,在直角梯形ABCD中,
,
,四边形CDEF为平行四边形,平面
平面ABCD,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/23/954e69aa-c4ad-4b09-a941-9e4a91deb1d0.png?resizew=175)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
平面ABE;
(2)若
,
,
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5a68a008a22d5a8cea5fe8dcf31e10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ee81b6066188abee9d167b6c7f3f71.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/23/954e69aa-c4ad-4b09-a941-9e4a91deb1d0.png?resizew=175)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d37014607e7d8ded383597baae738bbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e623b96c388d215c3ef28869a61f00e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bd3df0e78cc51865a46aa0ac013bc44.png)
您最近一年使用:0次
2023-03-22更新
|
1433次组卷
|
8卷引用:河南省2022-2023学年高三下学期核心模拟卷(中)文科数学(一)试题
河南省2022-2023学年高三下学期核心模拟卷(中)文科数学(一)试题青海省西宁市大通回族土族自治县2023届高三第二次模拟考试文科数学试题青海省西宁市2023届高三二模数学(文科)试题宁夏银川市六盘山高级中学2023届高三三模数学(文)试题四川省成都列五中学2022-2023 学年高三下学期阶段性考试(二)暨三诊模拟考试文科数学试题(已下线)专题06空间位置关系的判断与证明四川省成都市名校2022-2023学年高三下期4月定时训练文科数学试题(已下线)2024年全国高考名校名师联席命制数学(文)信息卷(十)
名校
8 . 如图所示,已知
中,
,且
,现将
沿BC翻折到
,满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/f09d95aa-931b-44c6-92f7-b6c12621c71e.png?resizew=146)
(1)求证:
;
(2)若E为边CD的中点,求直线AE与平面ABC所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc223bc59d4c5b1c99f811e4bded9783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb7f278de55bd20ebbebf93b2bffa77f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a9b12026eb766b2066b95cdc41220a7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/f09d95aa-931b-44c6-92f7-b6c12621c71e.png?resizew=146)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
(2)若E为边CD的中点,求直线AE与平面ABC所成角的正弦值.
您最近一年使用:0次
2023-02-22更新
|
695次组卷
|
6卷引用:北京市清华大学THUSSAT2023届高三上学期12月诊断性测试数学(理)试题
北京市清华大学THUSSAT2023届高三上学期12月诊断性测试数学(理)试题中学生标准学术能力诊断性测试2022-2023学年上学期12月测试(新课改版)数学试题(已下线)湖南省株洲市2023届高三下学期一模数学试题变式题17-22(已下线)专题20 空间几何解答题(文科)-1(已下线)专题8.15 空间中线面的位置关系大题专项训练(30道)-2022-2023学年高一数学举一反三系列(人教A版2019必修第二册)(已下线)10.3 直线与平面间的位置关系(第3课时)(七大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020必修第三册)
9 . 如图①,在平面四边形
中,
,
,
.将
沿着
折叠,使得点
到达点
的位置,且二面角
为直二面角,如图②.已知
分别是
的中点,
是棱
上的点,且
与平面
所成角的正切值为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/21/80a44054-f770-4ec7-9132-c8cd362ae2ac.png?resizew=316)
(1)证明:平面
平面
;
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/503c035fc57fb25aede1445af9aa2747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6906f59d09ce31956d6f5ea2b23fc77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/259784d576a060ec0512ea7d1d3b50a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcbbe22e47027caa1f678df97e01e97a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70505bc5e2d5d801742ab489bd6c0570.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a83ccde054ec5f3473ede6c07e484290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18483c9c195ecd922772527fa85c0fcb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/21/80a44054-f770-4ec7-9132-c8cd362ae2ac.png?resizew=316)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e4c805aba48958328ecf06ce42f296.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8112fd703f5ebbde4192592593734b1.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075d3daa131883d4a2dea29831efcbce.png)
您最近一年使用:0次
2023-02-19更新
|
748次组卷
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7卷引用:2023届高三全国学业质量联合检测2月大联考文科数学试题
2023届高三全国学业质量联合检测2月大联考文科数学试题河南省部分名校2022-2023学年高三下学期学业质量联合检测文科数学试题(已下线)立体几何专题:折叠问题中的证明与计算5种题型(已下线)专题20 空间几何解答题(文科)-2河南省濮阳市第一高级中学2023届高三模拟质量检测文科数学试题陕西省西安市长安区第一中学2022-2023学年高一下学期5月月考数学试题(已下线)考点15 立体几何中的折叠问题 2024届高考数学考点总动员【练】
解题方法
10 . 如图,在多面体
中,四边形
为正方形,平面
平面
,
,
是棱
上的一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/7/4a0c4365-9e46-4156-93ec-caccc942f814.png?resizew=185)
(1)是否存在点
,使得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
平面
?若存在,则求出
的值;若不存
在,请说明理由;
(2)求多面体ABCDEF的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/678dd64e61a6d3ab0f8a0b6513aef8e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab44fe98d2341b4b66ca841d3257a299.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/7/4a0c4365-9e46-4156-93ec-caccc942f814.png?resizew=185)
(1)是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66e60268888e6d548873a30434fbb2df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(2)求多面体ABCDEF的体积.
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