名校
解题方法
1 . 如图,在四棱锥
中,底面
是矩形,其中
,
,
底面
,
,
为
的中点,
为
的中点.
(1)证明:直线
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a5faf3cbb633fc4294c8ce703c64c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4317430d5a2b61d9a2a88b73e7d7ad39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9774f83067ed956a551bc41adcce0469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/6/68e9d843-fc85-4db1-837e-3af70dd6a431.png?resizew=144)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3201d3796ed9a29338aac25245a7c8e2.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3201d3796ed9a29338aac25245a7c8e2.png)
您最近一年使用:0次
2023-10-18更新
|
822次组卷
|
2卷引用:四川省成都市金牛区成都七中万达学校2023-2024学年高三上学期期中文数试题
2 . 如图,在四棱锥
中,
底面
,
分别为
的中点.
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
平面
;
(2)求二面角
的余弦值.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657232c1d8b201d49c98659d218a9e72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7631a5587cdcb6c1f2350955f8709d68.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/2/2258118c-3370-4abe-9c68-6d18c179941d.png?resizew=177)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f9bc6bf8ca426813d10b6db2e32d26.png)
您最近一年使用:0次
2023-08-31更新
|
429次组卷
|
2卷引用:四川省成都市彭州市2023-2024学年上学期高三期中考试数学(理科)试题
21-22高一下·浙江·期中
3 . 已知三棱锥
中,△ABC,△ACD都是等边三角形,
,E,F分别为棱AB,棱BD的中点,G是△BCE的重心.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/30/4c768d18-52ee-428a-958c-36eeb689cbf2.png?resizew=196)
(1)求异面直线CE与BD所成角的余弦值;
(2)求证:FG
平面ADC.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b94651d11df3a469d7ac72e6ac74c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/30/4c768d18-52ee-428a-958c-36eeb689cbf2.png?resizew=196)
(1)求异面直线CE与BD所成角的余弦值;
(2)求证:FG
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
您最近一年使用:0次
解题方法
4 . 如图所示,正方形ADEF与梯形ABCD所在的平面互相垂直,已知
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/73e79a0f-8581-4fa1-a9e6-d307229998c3.png?resizew=215)
(1)求证:
平面
;
(2)连接
,求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffda707068a4a1778e79da6f20fb86d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/73e79a0f-8581-4fa1-a9e6-d307229998c3.png?resizew=215)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8ccd4181f956f6e0140bf0ab8f0716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
您最近一年使用:0次
2022-05-07更新
|
596次组卷
|
3卷引用:四川省成都市郫都区2021-2022学年高二下学期期中考试文科数学试题
名校
5 . 如图,三棱柱
中侧棱与底面垂直,且
,
,
,M,N,P,D分别为
,BC,
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/83254c6e-4fd1-49a1-84d0-f549b8705b78.png?resizew=220)
(1)求证:
面
;
(2)求平面PMN与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e9ef3e849788645552cfb0735d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/83254c6e-4fd1-49a1-84d0-f549b8705b78.png?resizew=220)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc027de6ca8c118ed6ccd52eae99a821.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
(2)求平面PMN与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
您最近一年使用:0次
2022-06-05更新
|
1843次组卷
|
6卷引用:四川省成都市蓉城高中教育联盟2021-2022学年高二下学期期中考试理科数学试题
四川省成都市蓉城高中教育联盟2021-2022学年高二下学期期中考试理科数学试题河北省石家庄市第二中学2022届高三下学期高考考前模拟数学试题(已下线)2022年全国新高考II卷数学试题变式题13-16题江苏省镇江第一中学2021-2022学年高二下学期期末数学试题(已下线)2022年全国新高考II卷数学试题变式题20-22题辽宁省沈阳市东北育才学校科学高中部2021-2022学年高三下学期最后一次模拟数学试题
2022高三·河北·专题练习
名校
解题方法
6 . 已知四棱锥
如图所示,
,
,
,平面
平面
,点
为线段
的中点.
![](https://img.xkw.com/dksih/QBM/2021/9/29/2818542764204032/2819401981984768/STEM/a716b7178d1349b2a609e342b1516685.png?resizew=219)
(1)求证:
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ea5d7cfb1712e1aad407159c3fc6a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ff67dbfe0050270169791ae85ef940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ce5e00b89a3cd9c39d45c13a0afed7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448cbac9a1ef3de7538a6b30cdc39582.png)
![](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/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://img.xkw.com/dksih/QBM/2021/9/29/2818542764204032/2819401981984768/STEM/a716b7178d1349b2a609e342b1516685.png?resizew=219)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78172568aac9805d2ea2d5f742bf80c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9c9cfa597b444b5c9dbae7a825a695.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee4a6b8ef3e79b4482388c3391d8b18.png)
您最近一年使用:0次
2021-09-30更新
|
497次组卷
|
3卷引用:四川省遂宁中学校2021-2022学年高二上学期期中考试数学(理)试题
四川省遂宁中学校2021-2022学年高二上学期期中考试数学(理)试题(已下线)一轮复习大题专练48—立体几何(距离问题2)—2022届高三数学一轮复习河南省中原名校2021-2022学年高二上学期12月联考理科数学试题
名校
7 . 在如图所示的六面体中,底面ABCD是矩形,平面ABEF是以EF为直角腰的直角梯形,且平面ABCD⊥平面ABEF,
.
![](https://img.xkw.com/dksih/QBM/2021/5/13/2720085643862016/2784054716702720/STEM/c6f96277e486406fbbd04c4d629a5d97.png?resizew=180)
(1)求证:AC // 平面DEF;
(2)求直线CE和平面DEF所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/123af7ab0de060ac4cd90cb3701627f4.png)
![](https://img.xkw.com/dksih/QBM/2021/5/13/2720085643862016/2784054716702720/STEM/c6f96277e486406fbbd04c4d629a5d97.png?resizew=180)
(1)求证:AC // 平面DEF;
(2)求直线CE和平面DEF所成角的正弦值.
您最近一年使用:0次
名校
8 . 如图所示,在四棱锥
中,底面四边形
是菱形,底面
是边长为2的等边三角形,PB=PD=
,AP=4AF
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/a93bb600-1ac6-48dc-b699-8a170222ee71.png?resizew=209)
(1)求证:PO⊥底面ABCD
(2)求直线
与OF所成角的大小.
(3)在线段
上是否存在点
,使得
平面
?如果存在,求
的值;如果不存在,请说明理由.
![](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/1fa0c1a6e9990d435f5df2cba32cc203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/a93bb600-1ac6-48dc-b699-8a170222ee71.png?resizew=209)
(1)求证:PO⊥底面ABCD
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
(3)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5865d488a9cf1181016fd2e866177cdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8768996ca9a0f2c5d9a19abbd54df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8180b12d96caf2e6b3ca28a474185e41.png)
您最近一年使用:0次
2020-12-05更新
|
2360次组卷
|
11卷引用:四川省遂宁市安居区2020-2021学年高二上学期期中考试数学(文)试题
四川省遂宁市安居区2020-2021学年高二上学期期中考试数学(文)试题四川省遂宁中学校2021-2022学年高二上学期期中考试数学(文)试题四川省巴中市恩阳区2022-2023学年高二上学期期中数学试题四川省遂宁市射洪中学2021-2022学年高二上学期第一次月考数学理试题上海市南洋模范中学2022-2023学年高二上学期期中数学试题(已下线)期中测试卷01(测试范围:第10-11章)-2023-2024学年高二数学单元速记·巧练(沪教版2020必修第三册)江西省南昌市豫章中学2021-2022学年高二入学调研(B)数学(理)试题新疆新源县2020-2021学年高一下学期期末联考数学试题河南省温县第一高级中学2021-2022学年高二上学期12月月考文科数学试题上海市向明中学2022-2023学年高二上学期10月月考数学试题新疆哈密市第八中学2021-2022学年高二上学期期末数学(理)试题
20-21高三下·河南·阶段练习
名校
9 . 如图,在四棱锥
中,四边形
是梯形,
,
,点
是棱
上的动点(不含端点),
,
分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/2021/2/22/2663749759205376/2664036569718784/STEM/4b132111255b44838ef19985cdcab916.png?resizew=197)
(1)求证:
平面
;
(2)若
平面
,
,
,
,求二面角
的余弦值.
![](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/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f1161e0345b3646c71365430dccbb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2021/2/22/2663749759205376/2664036569718784/STEM/4b132111255b44838ef19985cdcab916.png?resizew=197)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd6a9a86a4438fe18a50e93c838f94f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)若
![](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/4a0e5697eca3f5205cb7b343648240bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ada16b1abf359ee1c6edb056aa7f510a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8613e9c359e58ad465fc4c2eaa411b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e5777a34d4761364c48e2b53ab79ff1.png)
您最近一年使用:0次
10 . 如图,六面体
中,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/c7aa7474-a02a-4d64-bfe4-1e3f846e5897.png?resizew=240)
(1)求证:
;
(2)若
,平面
平面
,
,
,
,求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a0c3a4e61b97fa9bc58f3179fc2958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04de6e3d84ddf7da3dc4fab26e59df46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/c7aa7474-a02a-4d64-bfe4-1e3f846e5897.png?resizew=240)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab79d395d5aa7500d0606dd94b6319ff.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce726bceb02452bb4e5ed6b00fa94e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a5628323a7eeb11213df5c9048b3543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb3ce43d216ad9d22ccfa0ec656266ed.png)
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2020-12-08更新
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2卷引用:四川省成都市蓉城名校联盟2020-2021学年高二(高中2019级)上学期期中联考文科数学试题