1 . 在如图所示的四棱锥
中,四边形
为菱形,且
,
,M为
中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/1d1ffd18-5ac5-4edc-8c15-eb593cfc5cdd.png?resizew=183)
(1)求证:平面
平面
;
(2)求点M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/d95ff21f23e9d99539ed8447a7534865.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eccbd2164cbc9c5eb449a419f742969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/1d1ffd18-5ac5-4edc-8c15-eb593cfc5cdd.png?resizew=183)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求点M到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
您最近一年使用:0次
名校
2 . 如图,四棱锥
的底面
为矩形,侧面
底面
且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/0e608af3-4503-4f8b-9445-8385df82c5fb.png?resizew=150)
(1)证明:
;
(2)若
,且四棱锥
的体积为
,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/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f70d6f5baadf8139ee650b84f2fde70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e4d19bf237a6fca67e0d01a9ddb726.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/0e608af3-4503-4f8b-9445-8385df82c5fb.png?resizew=150)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4125524caac016727c80d2722c5ba3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de0e448610eac96bdd5f864f873e575d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
您最近一年使用:0次
2019-11-12更新
|
705次组卷
|
4卷引用:江西省赣州市会昌中学2019-2020学年高二上学期第二次月考数学(文)试题
3 . 如图所示,在四棱锥
中,
是正方形,
平面
,
,
分别是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/86795e68-3975-4fbb-a585-536f06605b8a.png?resizew=209)
(1)求证:平面
平面
;
(2)证明平面
平面
,并求出
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/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99926bf272cd757f0985c69b390ebcce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b199a99e53d67ff4abf233930961a29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e3a25299c121dbb883fd3c7918d566d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/86795e68-3975-4fbb-a585-536f06605b8a.png?resizew=209)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a281c31b6e501123442d141860908a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
(2)证明平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5394d00a80a5900d7fd7d9961868bd22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
您最近一年使用:0次
4 . 如图,在四棱锥
中,底面
是矩形.已知
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/2bad8278-5fde-41a4-95cd-835cef085fef.png?resizew=156)
(1)求点B到面PAD的距离;
(2)取AB中点O,过O作
于E,
![](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/95060fee3304aa96b86192af21eb02d7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/2bad8278-5fde-41a4-95cd-835cef085fef.png?resizew=156)
(1)求点B到面PAD的距离;
(2)取AB中点O,过O作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/299fe914d64f3a06f9b641d5591fc47a.png)
①求证:为二面角
的平面角;
②求的正切值.
您最近一年使用:0次
5 . 如图,已知矩形
中,
、
分别是
、
上的点,
,
,
,
是
的中点,现沿着
翻折,使平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/777ae92f-8158-4785-9578-2fa41f34eb2d.png?resizew=400)
(1)
为
的中点,求证:
平面
.
(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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc56ba5a7757f3365b04024f8fd08b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51e0f9d0d28bfb81ad132e0064402573.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d28c625d7ac6878957facc8274d459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/777ae92f-8158-4785-9578-2fa41f34eb2d.png?resizew=400)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7e258c6995b058164df335e154692b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
6 . 如图1,在△ABC中,D,E分别为AB,AC的中点,O为DE的中点,
,BC=4.将△ADE沿DE折起到△
的位置,使得平面
平面BCED, F为A1C的中点,如图2.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/2903039b-bb8a-40e6-b78c-b99092b480f8.png?resizew=313)
(1)求证EF∥平面
;
(2)求点C到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0117046e7a37bebe0c7b987a00d2bcb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657dffbd3623b705f871878fbd9df57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7b3e7c7845a0ec3cbac709fda131764.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/2903039b-bb8a-40e6-b78c-b99092b480f8.png?resizew=313)
(1)求证EF∥平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
(2)求点C到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb88c278e18d776f165bc571031071d8.png)
您最近一年使用:0次
7 . 如图,在四棱锥
中,ABCD为菱形,
平面ABCD,连接AC,BD交于点O,
,
,E是棱PC上的动点,连接DE.
![](https://img.xkw.com/dksih/QBM/2020/1/30/2388354777645056/2389082449854464/STEM/80a2f18803264e8faf568d34ba40bf79.png?resizew=194)
(1)求证:平面
平面
;
(2)当
面积的最小值是4时,求此时点E到底面ABCD的距离.
![](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/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d71e6ea7333dbc78d0a7b9bc3892f940.png)
![](https://img.xkw.com/dksih/QBM/2020/1/30/2388354777645056/2389082449854464/STEM/80a2f18803264e8faf568d34ba40bf79.png?resizew=194)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3547a914468b082d8d8741b974a03190.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ad86d8f63d48c127ad859b92b2dca0c.png)
您最近一年使用:0次
2020-01-31更新
|
819次组卷
|
7卷引用:江西省信丰中学2018-2019学年高二上学期第四次月考数学(文A+理B+)试题
名校
8 . 如图,在四棱锥
中,四边形
是直角梯形,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b63f7bb04b2ddc7c88d0363a812a22f.png)
,
,
为等边三角形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/53ad696f-2a26-4ad2-bd8c-8959553cdfc0.png?resizew=203)
(1)证明:
;
(2)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/27f54fa15502f4ae24b3ff98bb96ec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b63f7bb04b2ddc7c88d0363a812a22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ff6d7dd48b57f03d82d2c522ee9b94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26a42b05e06fe34d66538930787bb3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecc34a42e6838de94da6dc08e0b578cd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/53ad696f-2a26-4ad2-bd8c-8959553cdfc0.png?resizew=203)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65334978b0519b379910dfc4acf8344.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2019-09-14更新
|
494次组卷
|
3卷引用:江西省赣州市南康中学2020-2021学年高二上学期第二次大考数学(文)试题
名校
9 . 如图,等腰梯形MNCD中,MD∥NC,MN=
MD=2,∠CDM=60°,E为线段MD上一点,且ME=3,以EC为折痕将四边形MNCE折起,使MN到达AB的位置,且AE⊥DC
(2)求点A到平面DBE的距离
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(2)求点A到平面DBE的距离
您最近一年使用:0次
2019-09-13更新
|
461次组卷
|
4卷引用:江西省南昌市进贤一中2019-2020学年高二下学期线上测试数学(理)试题
江西省南昌市进贤一中2019-2020学年高二下学期线上测试数学(理)试题湖南省长沙市开福区长沙市第一中学2019年高三9月月考数学试题(已下线)13高考大题综合训练[理]-《备战2020年高考精选考点专项突破题集》(已下线)13.高考大题综合训练[文] -《备战2020年高考精选考点专项突破题集》
10 . 如图,在直三棱柱
中,
为正三角形,
,
是
的中点,
是
的中点
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/3878619a-d3fe-4de0-a6f7-283c9b70b071.png?resizew=139)
(1)证明:
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e128547561f9154dce94bedc94613bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f94affe0fb5fcf95010f0c269111833b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bc71d44fc5e712cf7bc74fb7fa13262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5fde9d5b268f90278bd0fa652d95784.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/3878619a-d3fe-4de0-a6f7-283c9b70b071.png?resizew=139)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02438f0423acd0ff2dfa5ffb6abf143f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13cfdc6224181d44e63aab43ddaf07ef.png)
您最近一年使用:0次
2019-07-04更新
|
749次组卷
|
3卷引用:江西省赣州市赣县三中2019-2020学年高二1月考前适应性考试数学(理)试题