名校
解题方法
1 . 在四棱锥
中,底面
是矩形,平面
平面
,
,
是
的中点.
,
.
![](https://img.xkw.com/dksih/QBM/2020/7/13/2505229941760000/2506474520821760/STEM/e6d1788f-5244-46e0-b35b-3fc555be0d06.png)
(1)求证:
;
(2)若
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21665d21bbfb04410c78345de1fd15ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4cab41e3c3e1b04f0cff21aca315238.png)
![](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/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://img.xkw.com/dksih/QBM/2020/7/13/2505229941760000/2506474520821760/STEM/e6d1788f-5244-46e0-b35b-3fc555be0d06.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2919a92ec8fdae2a7b8511fff31fa65.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea051187d473c953b3d81a6ebe4d21f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14f0106a1329dfce39bb51ae7c9c74ff.png)
您最近一年使用:0次
2020-07-15更新
|
219次组卷
|
4卷引用:江西省抚州市南城一中2020--2021学年高二4月月考数学(理)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
解题方法
3 . 在如图所示的多面体中,平面
垂直于以
为直径的半圆面,
为
上一点,
,
,
.
![](https://img.xkw.com/dksih/QBM/2020/5/4/2455712498843648/2457599813337088/STEM/472d7ef98b114dcf9a1b6eea62933c54.png?resizew=197)
(1)若点
是线段
的中点,求证:
平面
;
(2)若点
为
的中点,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d70676406f26d339465fe3473c0c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e20b970f3b0dc1c9a3de6eb09beead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1822a1725b8797343a6615378356d91c.png)
![](https://img.xkw.com/dksih/QBM/2020/5/4/2455712498843648/2457599813337088/STEM/472d7ef98b114dcf9a1b6eea62933c54.png?resizew=197)
(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/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
您最近一年使用:0次
2020-05-07更新
|
167次组卷
|
3卷引用:江西省赣州市2019-2020学年高三年级摸底考试数学(文)试题
江西省赣州市2019-2020学年高三年级摸底考试数学(文)试题(已下线)【南昌新东方】 江西省南昌市新建一中2020-2021学年高三上学期10月第一次月考数学(文)试题江西省南昌市新建县第一中学2021届高三第一次月考数学文科试题
名校
解题方法
4 . 如图,在直三棱柱
中,点
,
分别为
和
的中点.
![](https://img.xkw.com/dksih/QBM/2020/9/24/2556904738144256/2557446879707136/STEM/f285883058be4ba8aa8e8e07d0b3b894.png?resizew=180)
(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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://img.xkw.com/dksih/QBM/2020/9/24/2556904738144256/2557446879707136/STEM/f285883058be4ba8aa8e8e07d0b3b894.png?resizew=180)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78172568aac9805d2ea2d5f742bf80c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14d355b4c58b4e883b9e65cc6da8622e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
您最近一年使用:0次
2020-09-25更新
|
632次组卷
|
7卷引用:江西省上高二中2021届高三年级第五次月考数学(文)试题
名校
解题方法
5 . 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
解题方法
6 . 如图,正方体
的棱长为
,点
、
为棱
、
的中点.
![](https://img.xkw.com/dksih/QBM/2020/4/26/2449798289408000/2450436423729152/STEM/69b52571e55c412dad4f29de4666e242.png?resizew=220)
(1)求证:
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e19d1a7e89beddaf468bdce5e31550e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e737bc35da650eda3825d29799b5f86f.png)
![](https://img.xkw.com/dksih/QBM/2020/4/26/2449798289408000/2450436423729152/STEM/69b52571e55c412dad4f29de4666e242.png?resizew=220)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f70cf3f6c7acbf60d4a4ca0ce89619.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe02a25afc35da213ba4aee378a308b.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4171e7f713d6b265d56b2662b7af57b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4734735213b599a9915e1ed91a5d8ce4.png)
您最近一年使用:0次
7 . 如图所示,在直三棱柱
中,
设
为
的中点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/b255a25a-8f05-4e33-8336-10925d708b5f.png?resizew=170)
(1)求证:
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34dae352c45f6d55b65e61e5e264d016.png)
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ed39da4698ec7a0aa2e967501d3eac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cdf47b9d0e440f43d3fa6ba4343be4c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/b255a25a-8f05-4e33-8336-10925d708b5f.png?resizew=170)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c920d02068d0e63ffdab70786c526d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34dae352c45f6d55b65e61e5e264d016.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
您最近一年使用:0次
名校
8 . 如图,直三棱柱
中,
,
,
,
分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/04995d23-7b87-42b4-af22-6ed033682091.png?resizew=163)
(1)证明:
平面
;
(2)已知
与平面
所成的角为30°,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/883fc5e3faf39829d60804b59deb1730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/04995d23-7b87-42b4-af22-6ed033682091.png?resizew=163)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2319d234a0586478d4e73020d48b3a10.png)
您最近一年使用:0次
2020-05-13更新
|
2758次组卷
|
16卷引用:江西省宜春市上高县第二中学2019-2020学年高三上学期11月月考数学(理)试题
江西省宜春市上高县第二中学2019-2020学年高三上学期11月月考数学(理)试题四川省广安市广安中学2019-2020学年高二9月月考(文)数学试题黑龙江省鹤岗市第一中学2019-2020学年高三上学期10月月考数学(理)试题江西省吉安市2019-2020学年高三上学期期中数学(理)试题2020届河北省衡水中学高三年级上学期五调考试数学(理科)试题四川省棠湖中学2019-2020学年高三下学期第二次月考数学(理)试题甘肃省永昌县第一中学2020-2021学年高三上学期第一次月考数学理试题【市级联考】辽宁省丹东市2019届高三总复习质量测试(一)理科数学试题湖北省襄阳市2019-2020学年高二上学期期末数学试题2020届黑龙江省实验中学高三上学期期末考试数学(理)试题(已下线)专题01 平行、垂直问题的证明(第三篇)-备战2020年高考数学大题精做之解答题题型全覆盖山东济南市历城第二中学2019-2020学年高一下学期开学考试数学试题江苏省无锡市江阴市高级中学2019-2020学年高二下学期期中数学试题2020届河北省衡水中学高三高考考前密卷(一)数学(理)试题湖北省宜昌市天问高中2019-2020学年高二(下)开学数学试题人教B版(2019) 选择性必修第一册 过关斩将 第一章 空间向量与立体几何 1.2 空间向量在立体几何中的应用 1.2.4 二面角
名校
解题方法
9 . 如图所示,在四棱锥
中,
平面
,
是线段
的中垂线,
与
交于点
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2020/7/7/2500980319559680/2501550599749632/STEM/4500e48a644c4309b9bbf53239d3360d.png?resizew=236)
(1)证明:平面
平面
;
(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/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04c222223dae9ef27d4c132534d9848.png)
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(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
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2020-07-08更新
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613次组卷
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8卷引用:江西省贵溪市实验中学2020-2021学年高二上学期第一次月考数学(文)试题
江西省贵溪市实验中学2020-2021学年高二上学期第一次月考数学(文)试题2020届山西省运城市高中联合体高三模拟(二)数学(文)试题贵州省思南中学2019-2020学年高一下学期期末考试数学试题安徽省名校学术联盟2020届高三下学期押题卷文科数学试题(已下线)专题8.5 直线、平面垂直的判定及性质(精讲)-2021年新高考数学一轮复习学与练(已下线)专题8.5 直线、平面垂直的判定及性质(讲)-2021年新高考数学一轮复习讲练测(已下线)专题8.5 直线、平面垂直的判定及性质(讲)- 2022年高考数学一轮复习讲练测(新教材新高考)(已下线)押全国卷(文科)第19题 立体几何-备战2022年高考数学(文)临考题号押题(全国卷)
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解题方法
10 . 如图,已知PA⊥矩形ABCD所在的平面,M、N分别为AB、PC的中点,∠PDA=45°,AB=2,AD=1.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/a51752ea-91b3-4192-bb85-c9dfe1e257e5.png?resizew=181)
(1)求证:MN⊥CD;
(2)求点C点到平面PDM的距离.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/a51752ea-91b3-4192-bb85-c9dfe1e257e5.png?resizew=181)
(1)求证:MN⊥CD;
(2)求点C点到平面PDM的距离.
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