名校
解题方法
1 . 如图,四边形
是正方形,
平面
,
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b21876717f7a9ba0f0b179ce2aa669c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/49ff9432-c251-46ca-80f8-9e3ddb170c04.png?resizew=182)
(1)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/39967d6f3aed6ce7b6643787795d451d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a87e02bff18fba8e9c81de467da297c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b21876717f7a9ba0f0b179ce2aa669c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/49ff9432-c251-46ca-80f8-9e3ddb170c04.png?resizew=182)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba8f7af0e091e082100c3cd7f8c487f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a2481914354c3cdb36c1ada923d5b90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4718378fec39801c6efa758cb819faa1.png)
您最近一年使用:0次
2020-11-12更新
|
1369次组卷
|
3卷引用:江西省吉水中学2020-2021学年高二上学期数学(文)月考试题
名校
解题方法
2 . 在三棱锥
中,
,
,平面
平面
,点
在棱
上.
![](https://img.xkw.com/dksih/QBM/2020/8/13/2527164359933952/2530081765548032/STEM/ccf791bf04e84882add419545c57d0ab.png?resizew=168)
(1)若
为
的中点,证明:
;
(2)若三棱锥
的体积为
,求
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4959250cb4f4289b7c5400c7bee0426.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/925e8ff124fabafebb1467a47869688d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06123e81c41198c76a3335757fac2c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2020/8/13/2527164359933952/2530081765548032/STEM/ccf791bf04e84882add419545c57d0ab.png?resizew=168)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1f48dc028c0950f410bb810b54195c7.png)
(2)若三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d4c4c20702df9a48a3ed7412fefe47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
您最近一年使用:0次
2020-08-18更新
|
451次组卷
|
11卷引用:江西省吉安县立中学2020-2021学年高二12月月考数学(文A)试题
江西省吉安县立中学2020-2021学年高二12月月考数学(文A)试题安徽省示范高中2019-2020学年高一下学期统一考试数学试题广东省江门市第二中学2020-2021学年高二上学期第一次月考数学试题安徽省合肥市第八中学2020-2021学年高二上学期第一次段考理科数学试题2020届湖南省邵阳市高三下学期5月二模文科数学试题广西桂林、崇左、贺州2019-2020学年高三5月联合模拟考试数学(文)试题(已下线)专题19 立体几何综合-2020年高考数学(文)母题题源解密(全国Ⅲ专版)河北省重点中学2019-2020学年高一下学期期末数学试题河北省邢台市临西实验中学2019-2020学年高一下学期期末数学试题(已下线)文科数学-2021年高考押题预测卷(新课标Ⅰ卷)01(已下线)文科数学-2021年高考押题预测卷(新课标Ⅰ卷)03
名校
解题方法
3 . 如图,在正方体
中,M,N分别为棱
,
的中点.
![](https://img.xkw.com/dksih/QBM/2020/7/9/2501761767686144/2502439590428672/STEM/5730937c567444eeb2b50b686c1f41f5.png?resizew=222)
(1)证明:
平面
;
(2)若
,求点M到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84f23a20779cbf15d4300ffc69f27f14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbb16f7dbc4b9993c4efa0764df1d8ca.png)
![](https://img.xkw.com/dksih/QBM/2020/7/9/2501761767686144/2502439590428672/STEM/5730937c567444eeb2b50b686c1f41f5.png?resizew=222)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f16b858f4745b79f0ca8258522180a0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e44374cc9f8e36b164e5fc99ee227dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f16b858f4745b79f0ca8258522180a0.png)
您最近一年使用:0次
2020-07-09更新
|
243次组卷
|
2卷引用:江西省吉水中学2020-2021学年高二11月月考数学(理)试题
4 . 如图,在三棱锥
中,二面角
是直二面角,若
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20fe532cad7a1f9279d58874aa4def00.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/e4547a4f-4675-47a8-8d6f-f512d8c04a8f.png?resizew=150)
(Ⅰ)求三棱锥
的体积;
(Ⅱ)求点
到
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f1854ba6cc92481d7a616bd2788a47e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b107b118778650bdc523229900256418.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20fe532cad7a1f9279d58874aa4def00.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/e4547a4f-4675-47a8-8d6f-f512d8c04a8f.png?resizew=150)
(Ⅰ)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
(Ⅱ)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
2020-02-20更新
|
339次组卷
|
2卷引用:江西省泰和中学2021-2022学年高二上学期第一次段考数学(理)试题
5 . 如图,在三棱柱
中,侧面
是菱形,
,
是棱
的中点,
,
在线段
上,且
.
![](https://img.xkw.com/dksih/QBM/2020/3/27/2428136999288832/2428831724412928/STEM/7648d1bf-2ce4-4a60-9b56-6fee5f797583.png)
证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd4c85bb98a2a0afddd7ed92578ad2e.png)
面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a8035fc825a001d7d9a3dacd8271662.png)
若
,面
面
,求
到面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac4fb99967c46a3855bcf2885b448c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20fc4fbd9390e2a5200920910abc63b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59da0269add3993c134f46169f213907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86814dbae9a5343d69bb4647900b3bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2221fe3118d6d55a78201f1c5296777c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3bd9abb95b0e96333873fc454e03a7.png)
![](https://img.xkw.com/dksih/QBM/2020/3/27/2428136999288832/2428831724412928/STEM/7648d1bf-2ce4-4a60-9b56-6fee5f797583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd4c85bb98a2a0afddd7ed92578ad2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a8035fc825a001d7d9a3dacd8271662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45224f7eac9d0cef64bf28d93e7721a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2013579652aa5f53d43080856f01c374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20fc4fbd9390e2a5200920910abc63b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/445cfd832967db6bbaa0a2ea311b4f0d.png)
您最近一年使用:0次
2020-03-27更新
|
993次组卷
|
2卷引用:江西省吉安市第一中学2021-2022学年高二10月第一次段考数学(理)试题
6 . 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
7 . 如图,直三棱柱
中,
,
,D,E分别是
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/1164b1a9-94fd-47a2-ad15-6b2c94724b71.png?resizew=168)
(1)证明:平面
平面
;
(2)求三棱锥
的高.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac4fb99967c46a3855bcf2885b448c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90e17995e2f71e297d94ae51c7e5b1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ac2e11788860424508ea9e80cf89d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbb16f7dbc4b9993c4efa0764df1d8ca.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/1164b1a9-94fd-47a2-ad15-6b2c94724b71.png?resizew=168)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2340abb56da9c571b7f17bb21cabe010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d589c7f5ed8b617abed55067bd833ab.png)
您最近一年使用:0次
2018-05-14更新
|
961次组卷
|
4卷引用:【校级联考】江西省吉安市几所重点中学2018-2019学年高二上学期联考数学(文)试题
8 . 如图,正三棱柱
中,
是
中点.
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625059386720256/1625059387277312/STEM/09946d93ffe54623be2b3a7ebad42724.png)
(Ⅰ)求证:平面
;
(Ⅱ)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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625059386720256/1625059387277312/STEM/09946d93ffe54623be2b3a7ebad42724.png)
(Ⅰ)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f2ff6be500cbcd878525695160ffae.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ef8866ccf160ddc441bf69c5d3a3d5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba99277e38f8d9f817a9d7db8198219.png)
您最近一年使用:0次
2017-02-08更新
|
839次组卷
|
3卷引用:2017届江西吉安一中高三文上学期段考二数学试卷