如图,在四棱锥
中,底面ABCD是菱形,且
,
为等边三角形,G为边AD的中点,平面
平面ABCD.
平面PAD;
(2)若E为边BC的中点,在边PC上是否存在点F,使平面
平面ABCD?证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf65b8884909d735d575efe81a2d2ad.png)
(2)若E为边BC的中点,在边PC上是否存在点F,使平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f6dd051db98c531f9ef18cdfd793f4a.png)
22-23高一下·全国·课后作业 查看更多[6]
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 4.4.2 平面与平面垂直(已下线)第07讲 立体几何大题(11个必刷考点)-《考点·题型·密卷》(已下线)10.4 平面与平面间的位置关系(第1课时)(七大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020必修第三册)(已下线)专题20 空间直线、平面的垂直-《重难点题型·高分突破》(人教A版2019必修第二册)(已下线)8.6.3平面与平面垂直——随堂检测(已下线)专题20 平面与平面的位置关系-《重难点题型·高分突破》(苏教版2019必修第二册)
更新时间:2023-06-11 21:23:00
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相似题推荐
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】如图,在体积为1的四棱锥P-ABCD中,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/b66e9c5a-29f2-4112-9d94-91d3c3b75bff.png?resizew=184)
(1)证明:平面
平面
;
(2)若点E为棱BC上一动点,求直线PE与平面PAD所成角的正弦值的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9b14eb59a1422aa0ead08217f8d3c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3be747bcc7ce620c91362fda9179af7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/b66e9c5a-29f2-4112-9d94-91d3c3b75bff.png?resizew=184)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(2)若点E为棱BC上一动点,求直线PE与平面PAD所成角的正弦值的最大值.
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解答题-证明题
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适中
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【推荐2】在三棱柱ABC-A1B1C1中,AB⊥AC,B1C⊥平面ABC,E,F分别是AC,B1C的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/4667e99b-b4fe-4dbb-90f0-f9161292e7bc.png?resizew=193)
(1)求证:EF∥平面AB1C1;
(2)求证:平面AB1C⊥平面ABB1.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/4667e99b-b4fe-4dbb-90f0-f9161292e7bc.png?resizew=193)
(1)求证:EF∥平面AB1C1;
(2)求证:平面AB1C⊥平面ABB1.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
解题方法
【推荐1】如图,在四棱锥
中,底面
是正方形,其他四个侧面都是等边三角形,
与
的交点为O.
(Ⅰ)求证:
平面
;
(Ⅱ)已知
为侧棱
上一个动点. 试问对于
上任意一点
,平面
与平面
是否垂直?若垂直,请加以证明;若不垂直,请说明理由.
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d30637da200a07672ae231b4c5c09cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(Ⅱ)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc6f6dfdbe7d39891c35f67e1a95c7f.png)
![](https://img.xkw.com/dksih/QBM/2010/5/10/1569723786174464/1569723791433728/STEM/d8b5dadf27624f869fe12c9235ec0d2e.png?resizew=247)
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适中
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【推荐2】在四棱锥
中,底面
为等腰梯形,平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
底面
,其中
,
,
,
,点
为
中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/0037b332-4a62-4723-877e-1baa6f12aa56.png?resizew=151)
(1)证明:
平面
;
(2)求二面角
的大小.
![](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/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d5ba108d7d2d4807f2c74a22e536fe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dfb8d8c26dd656f60119ad25b9fff2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/0037b332-4a62-4723-877e-1baa6f12aa56.png?resizew=151)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/871221c3eaabb6d9b030ce91c7139709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f479b251fdb01bae6d16abb7f2d694a7.png)
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