如图所示,正方形
与矩形
所在平面互相垂直,
,
,E为线段
上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/bf70f3e4-1484-410c-88e4-347bd5cc9b89.png?resizew=247)
(1)当
∥平面
,求证:
为
的中点;
(2)在线段
上是否存在点
,使得平面
平面
?若存在,求出
的长;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7253ffd3fc633d861810ee2e872188b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f80f51c31583fea58fde645474d60b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91068c5f90e063b7b50887312244c750.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/bf70f3e4-1484-410c-88e4-347bd5cc9b89.png?resizew=247)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f59727be34cd56e46ede26aa3c0cf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52058e848bd432bf64f74b0bb12b1419.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57132b0bd38c035fec010ee3be1bc8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
2023·河南·模拟预测 查看更多[4]
河南省2022-2023学年高三下学期核心模拟卷(中)文科数学(二)试题广西壮族自治区防城港市2023届高三下学期4月月考数学(文)试题(已下线)立体几何专题:立体几何探索性问题的8种考法(已下线)专题09 基本图形的平行与垂直-期中期末考点大串讲(苏教版2019必修第二册)
更新时间:2023-03-21 23:11:05
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相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】如图,在三棱柱
中,
,
平面
,
,
.
(1)证明:平面
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e16f65c3a318220c2f5baac171bbb61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/883fc5e3faf39829d60804b59deb1730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/5/4479a1df-3c26-4665-9631-8a5fa483250f.png?resizew=186)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/767c061dd96dfaaa7fa1acdbee764ba6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdaa8065bea92fe61bce56090d8cb235.png)
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【推荐2】如图,
为正三角形,
平面
,
,
.
![](https://img.xkw.com/dksih/QBM/2020/4/20/2445374804426752/2445519356264448/STEM/7c6315413d6c48229cbf0ca28f4e1b04.png?resizew=130)
(1)求证:平面
平面EBD;
(2)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd654221ab95fe241d9e0202443f2609.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d558a7af9d9c581c960a8f65b14b0f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd3f1b34e10a2ecc29c87bf3dfc98c10.png)
![](https://img.xkw.com/dksih/QBM/2020/4/20/2445374804426752/2445519356264448/STEM/7c6315413d6c48229cbf0ca28f4e1b04.png?resizew=130)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/816b7f285cc55bbe5bf873538ba87230.png)
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解答题-证明题
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适中
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【推荐1】如图,已知四棱锥
,底面
为长方形,
平面
分别是
中点.
(1)求证:
;
(2)若
,求平面
和平面
所成角的余弦值.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58bf40f6235d0231481c2598e2ba977b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1683fed718259fa7b77ced8be46c87.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/16/909a4eef-4019-43b4-bc93-48ed6d16c63c.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1a1fd2fc33e89f357cef772ff6cd0e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/215fd5a5480535f3517f1c16ece81816.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e2da608b66c9aee03e2503388ba4fd.png)
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【推荐2】如图,在直三棱柱
中,
,
.
(1)求证:
;
(2)若
与平面
所成角的正弦值为
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8e9ec412ea0355e4e5cd06c60e5fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16cfb38323095090b0fe5eee70b24210.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/7/3e205b1c-8262-445a-bdcc-d21dc686629c.png?resizew=165)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e862713d078c4f06ec1f15ccd6f5a1f7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821309f088a175c00dc0f4828334503d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3205e4c6328a708c2f7f9bd40bf3762f.png)
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【推荐1】如图,
与
所在平面相互垂直,
是边长为2的等边三角形,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/b43b4150-9863-4814-9ca1-f358bfbe63cb.png?resizew=192)
(1)求证:
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13d28cb7181257cf732af4b615fc47d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffc2817fa590affb5a760a25dc65308.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/b43b4150-9863-4814-9ca1-f358bfbe63cb.png?resizew=192)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d72a007e3c4a134956b0e3fbde5f46.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6dfb039aafe2d2841f8c28b117cf741.png)
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解题方法
【推荐2】如图,在四棱锥
中,底面
是菱形,
,
,
,
,平面
平面
,
,点
在棱
上,且
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
的长;
(2)求三棱锥
的体积.
![](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/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23f01af749100e1888bba06268843db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb96e0331eebe80ed1ff610faf531fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae890f9e8b32aa53a54158f24f4a87bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa69a2247ad4d5231aa361349b12f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea806939ab65af688284de59a21488c.png)
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解题方法
【推荐3】如图,平面
平面
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/3cffc3f2-b258-439b-b7db-c5298952c3c8.png?resizew=163)
(1)求证:
平面
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a4e3f0349fa83dc2a0b7d798f04843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff6307019d82d2a2a51e0ffd4ebf345.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91686de6945575230a817f6f9c6042cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/535e49978f2938bdaf12521fdde7de8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91a5deba0b92c6c7ae4a660a9f3991f2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/3cffc3f2-b258-439b-b7db-c5298952c3c8.png?resizew=163)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f44f2b2f82a9126223138972850aa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1893d78af450a5fa09810537adc2dfa.png)
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【推荐1】如图,四棱锥
中,底面
为梯形,且
,
,点M在棱
上,若直线
平面
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a98c8e36238ad90378e724466fcb6023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4770a1f98495ff85859bc6508d6d5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d27ff0b39832f094ec51e28721d739.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134946d7c91a1ad97f9bcd4bf627315d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/76d20586-2b41-445f-a679-6a54db8a9bcd.png?resizew=145)
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【推荐2】已知四棱锥
,底面ABCD为菱形,
,H为PC上的点,过AH的平面分别交PB,PD于点M,N,且
平面AMHN.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/7e759ab8-6677-4d09-8c63-b963dc0752cc.png?resizew=237)
(1)证明;
;
(2)若H为PC的中点,
,PA与平面ABCD所成的角为60°,求AD与平面AMHN所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6be2b61f4a38e2ee2c1a01e00b3ae6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb86d420c825e9dbb9686784f6d4eb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f306ff6d237cd9d847aa109acf9333d7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/7e759ab8-6677-4d09-8c63-b963dc0752cc.png?resizew=237)
(1)证明;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11af43b6fbbd2d71f0a30f4a84ce9093.png)
(2)若H为PC的中点,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83c2fb70ff4c51c80bd6013d8006a17.png)
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