1 . 如图,在正方体
中,
为棱
的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/10/2976275944808448/2977317381554176/STEM/5040b494f43d404b932517eac71ca3f3.png?resizew=189)
(1)求证:
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2022/5/10/2976275944808448/2977317381554176/STEM/5040b494f43d404b932517eac71ca3f3.png?resizew=189)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb689000fa7a3b425be3196d8b0f32af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f233b375753611ffa7a93c2c12ef5e28.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/270a2ff49366962834dbec2d3bc2d9a7.png)
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3卷引用:江苏省连云港市东海县2021-2022学年高二下学期期中数学试题
名校
解题方法
2 . 如图,四棱锥P-ABCD的底面是矩形,PA⊥平面ABCD,E,F分别AB,PD的中点,且PA=AD.
(2)求证:AF⊥平面PCD.
(2)求证:AF⊥平面PCD.
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8卷引用:江苏省南京市金陵中学河西分校2021-2022学年高一下学期期中数学试题
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解题方法
3 . 如下图所示,在四棱锥
中,底面ABCD是菱形,点E是棱PC上的点(不与端点重合),平面ABE与棱PD交于点F,求证:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/c465c660-7f6d-4baa-a7a4-9743a39924f0.png?resizew=183)
(1)
平面PCD;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/c465c660-7f6d-4baa-a7a4-9743a39924f0.png?resizew=183)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fdb2b9d6a4a54ed1328c5b3adcf7b6.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/666734423f1818d76a74f171b7420b68.png)
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2卷引用:江苏省无锡市第一中学2021-2022学年高一艺术班下学期期中数学试题
名校
4 . 《九章算术》卷第五《商功》中描述几何体“阳马”为底面为矩形,一棱垂直于底面的四棱锥,在直角梯形
中,
,
,过点A作
交SC于点D,以AD为折痕把
折起,当几何体
为阳马时,下列四个命题:
①
;
②
平面
;
③SA与平面
所成角的大小等于
;
④AB与SC所成的角等于
.
其中正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/5/1/2970037963579392/2973074720595968/STEM/29f13db3-79dc-4621-a77a-cb1285ae16cb.png?resizew=210)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e696e967e7e6c52f95564261bb21cf44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/351793697c7afaca10bbe560c8c7b51a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3206f9e1b87d5a24d4b6f736b7b7b175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39043732454c9364dca44f7f59640121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5830322dd2824ed012a68f1a2bd9c742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90fa715d27ae43ec1e157226bc9dea54.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307807ee10071bafbe922eb18d2517d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ef796b46e68fe77b117ff0483d2370c.png)
③SA与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5000fea066102e62cf2128ccbbd2b3e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
④AB与SC所成的角等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
其中正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/5/1/2970037963579392/2973074720595968/STEM/29f13db3-79dc-4621-a77a-cb1285ae16cb.png?resizew=210)
A.①② | B.①③ | C.②④ | D.③④ |
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5卷引用:江苏省无锡市第一中学2021-2022学年高一艺术班下学期期中数学试题
江苏省无锡市第一中学2021-2022学年高一艺术班下学期期中数学试题江苏省扬州中学2021-2022学年高一下学期5月月考数学试题四川省射洪中学校2022-2023学年高二上学期11月期中考试数学(理科)试题(已下线)专题10 立体几何的综合问题-2021-2022学年高一数学下学期期末必考题型归纳及过关测试(人教A版2019)4.3.2 直线与平面垂直的性质
名校
5 . 如图,正四棱锥P-ABCD中,
,点M,N分别是PA,BD的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/4/2972205342539776/2972927001673728/STEM/db92b1b8-54b5-4bd3-99db-c2cc9bff1bc4.png?resizew=270)
(1)求证:
平面PBC;
(2)求二面角D-PA-B的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d001be02aec8fa6d094a80d0115430ff.png)
![](https://img.xkw.com/dksih/QBM/2022/5/4/2972205342539776/2972927001673728/STEM/db92b1b8-54b5-4bd3-99db-c2cc9bff1bc4.png?resizew=270)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
(2)求二面角D-PA-B的正弦值.
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3卷引用:江苏省泰州中学2021-2022学年高二下学期期中数学试题
名校
解题方法
6 . 如图,在四棱锥
中,底面四边形ABCD是平行四边形,
,
,
分别为棱
的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/1/2970082166874112/2972816046415872/STEM/d6229271-a00d-46ab-84bb-13e60bd0d237.png?resizew=185)
(1)证明:
平面
;
(2)点
为底面四边形内的一动点(包括边界),且平面
平面
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.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/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47891397990336f55f96bd66d367758b.png)
![](https://img.xkw.com/dksih/QBM/2022/5/1/2970082166874112/2972816046415872/STEM/d6229271-a00d-46ab-84bb-13e60bd0d237.png?resizew=185)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a407b262c22419f73396170ecdc849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e106f4233be16e98f2c1bf9f1635622.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51daddc16eddbdf70ab3c15a28f6286b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e106f4233be16e98f2c1bf9f1635622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
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5卷引用:江苏省无锡市辅仁高级中学2021-2022学年高一下学期期中数学试题
江苏省无锡市辅仁高级中学2021-2022学年高一下学期期中数学试题(已下线)增分专题六 立体几何中的范围与最值问题(已下线)第30讲 平面与平面平行2023版 湘教版(2019) 必修第二册 过关斩将 第4章 4.4 平面与平面的位置关系 4.4.1 平面与平面平行4.4.1 平面与平面平行的性质
名校
7 . 如图,在直三棱柱
中,
,
,
,
,E、F分别是
、
的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/3/2971571202973696/2972784106258432/STEM/6bc70e90-d9d4-4cfa-898a-389b0f249d38.png?resizew=180)
(1)求证:
平面
;
(2)求直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267880e605306851d8f46be77b11f9c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6623de5abdeae42cb02348563ff103.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1a56baf43ffdf67bc8460856e31fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a1be17e0a3e51cde1f50f384198e71e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://img.xkw.com/dksih/QBM/2022/5/3/2971571202973696/2972784106258432/STEM/6bc70e90-d9d4-4cfa-898a-389b0f249d38.png?resizew=180)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a407b262c22419f73396170ecdc849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
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名校
解题方法
8 . 如图,三棱柱
的侧棱与底面垂直,
,点
是
的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/2/2970612790157312/2971987737083904/STEM/d5a184c564a847de8e0912e77f97cf02.png?resizew=142)
(1)求证
;
(2)求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2022/5/2/2970612790157312/2971987737083904/STEM/d5a184c564a847de8e0912e77f97cf02.png?resizew=142)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b4cdc3a083d1263634d510f172dab09.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02cb62f4c1e0e023619922eb8a509c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbc7e774e4ae40c23bf4ceed179230ca.png)
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2022-05-04更新
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5卷引用:江苏省无锡市第一中学2021-2022学年高一下学期期中数学试题
江苏省无锡市第一中学2021-2022学年高一下学期期中数学试题湖南省衡阳师范学院祁东附属中学2022-2023学年高一下学期期中数学试题宁夏六盘山高级中学2021-2022学年高二下学期第一次月考数学(文)试题(已下线)专题08 立体几何中的平行与垂直问题-2021-2022学年高一数学下学期期末必考题型归纳及过关测试(人教A版2019)安徽省亳州市第二中学2021-2022学年高一下学期期末数学试题
名校
9 . 如图,在四棱锥
中,平面
平面
,
,
,
,
,点
为
的中点.
![](https://img.xkw.com/dksih/QBM/2022/4/28/2967472060997632/2970602021052416/STEM/8a8bec5cf88945f69ee80242c97adab4.png?resizew=215)
(1)求证:
平面
;
(2)求平面
与平面
夹角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d31600cba2d5256c7e78b6122d6755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0295d3385f3ec11ad4d77d39d2e68ffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7477fccf4400c9c654e4fe3477032ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/2022/4/28/2967472060997632/2970602021052416/STEM/8a8bec5cf88945f69ee80242c97adab4.png?resizew=215)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5865d488a9cf1181016fd2e866177cdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65277734669566578cbb7d690bb200fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4739afd7311501e948aa4e1e5c1cb17.png)
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2卷引用:江苏省镇江第一中学2021-2022学年高二下学期期中数学试题
10 . 如图,
分别是空间四边形
各边上的点(不与各边的端点重合),且
,
.则下列结论一定正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967309888102400/2970317775790080/STEM/f7267071-5b4b-4a24-a833-bfbca148d43e.png?resizew=200)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42c2d86d8daea5e652d99fe1c6bc3f9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b260cc28390899f332c11a64ba23a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13b8c0c660cde114d7aba834fcda26b3.png)
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967309888102400/2970317775790080/STEM/f7267071-5b4b-4a24-a833-bfbca148d43e.png?resizew=200)
A.![]() |
B.![]() |
C.![]() ![]() |
D.若直线![]() ![]() ![]() |
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2卷引用:江苏省常州市八校2021-2022学年高二下学期5月联考数学试题