如图,直三棱柱
中,
,E为棱BB1的中点,F为棱AB上的点.
![](https://img.xkw.com/dksih/QBM/2022/1/24/2901382638026752/2916878243397632/STEM/f93d18c9-5a3e-4a70-a92a-c4ec0912d5f4.png?resizew=183)
(1)证明∶
;
(2)当C1F与平面ABC所成的角为
时,求三棱锥A-CEF的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a341020fe2c195914807b024fb9584.png)
![](https://img.xkw.com/dksih/QBM/2022/1/24/2901382638026752/2916878243397632/STEM/f93d18c9-5a3e-4a70-a92a-c4ec0912d5f4.png?resizew=183)
(1)证明∶
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/509177ea6fe7955e91a9db0e98d139e4.png)
(2)当C1F与平面ABC所成的角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
2022·山西临汾·一模 查看更多[4]
山西省临汾市2022届高三高考考前适应性训练(一)数学(文)试题(已下线)重难点03 立体几何与空间向量-2022年高考数学【热点·重点·难点】专练(全国通用)陕西省西安市长安区第一中学2022届高三下学期三模文科数学试题江苏省南京市第十二中学2022-2023学年高三下学期三月月考数学试题
更新时间:2022-02-15 12:26:53
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相似题推荐
解答题-问答题
|
适中
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解题方法
【推荐1】如图,在多面体
中,平面
平面
,
∥
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2020/6/12/2482814848860160/2483223103029248/STEM/ec0b3442d5384ed8a53e18fd535ec3d6.png?resizew=184)
(1)求多面体
的体积;
(2)已知
是棱
的中点,在棱
是否存在点
使得
∥
,若存在,请确定点
的位置;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1e3a43d0fa18f6c0888ba804d5b329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0d7095ddd69d6ceaf1065b1bc2c79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/458e0536de1347270b853869399975e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/337f017d0c8eeb3f181e0211935ecf2d.png)
![](https://img.xkw.com/dksih/QBM/2020/6/12/2482814848860160/2483223103029248/STEM/ec0b3442d5384ed8a53e18fd535ec3d6.png?resizew=184)
(1)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1e3a43d0fa18f6c0888ba804d5b329.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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【推荐2】如图,在长方形ABCD中,
,
为线段
的三等分点,G、H为线段DC的三等分点.将长方形ABCD卷成以AD为母线的圆柱W的半个侧面,AB、CD分别为圆柱W上、下底面的直径.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/10/203ad274-a8d0-465a-9474-e3e8867e7afb.jpg?resizew=255)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/10/e16cb035-ca8e-4582-b961-e0dacd2c5e94.jpg?resizew=178)
(1)证明:平面ADHF⊥平面BCHF;
(2)若P为DC的中点,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74102b374065a1ea587571fcfc5944fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/898ff5225095c949f2cc793801bf47ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/10/203ad274-a8d0-465a-9474-e3e8867e7afb.jpg?resizew=255)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/10/e16cb035-ca8e-4582-b961-e0dacd2c5e94.jpg?resizew=178)
(1)证明:平面ADHF⊥平面BCHF;
(2)若P为DC的中点,求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c4f5f57e146437279c0078cd02fd3f.png)
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解答题-问答题
|
适中
(0.65)
【推荐1】如图,在三棱锥
中,
平面ABC,且
,
.
证明:
为直角三角形;
设A在平面PBC内的射影为D,求四面体ABCD的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d3910616e36cfc1292da79e709816fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4564baf209de77802d46cda82995c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e50b5c7b9aa915f9613c27ac38133062.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15bad03295db27144b7283e65eaa9554.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/53482b7e-f60b-4925-a354-d2eb8618790a.png?resizew=162)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f409b28f7cb97726646e79709ad25190.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
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解答题-证明题
|
适中
(0.65)
【推荐2】如图,在四棱柱
中,底面ABCD为正方形,侧棱
底面ABCD,E为棱
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/5bb57e6f-8479-4783-86f8-bdd3ca9481f9.png?resizew=157)
(1)求证:
平面BDE;
(2)求证:
;
(3)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd694ad3a4733c7c84aaa7946aeea4de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/326a3339175592bd1e793a9054d57fe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c640abbdc470479407da1ae2aa80fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7fa3aea72ccc36948a4a90f7368f71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c47b3e7435856bedf495e1e859be631.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/5bb57e6f-8479-4783-86f8-bdd3ca9481f9.png?resizew=157)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7fbc50e04f0833708d79b0eb648a31.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39228dcae7d568fa681cd4dbf05d76c.png)
(3)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8040a570a0197daf7d1a7b50c89d9e2.png)
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解答题-证明题
|
适中
(0.65)
【推荐3】如图,在四棱锥
中,底面
是边长为3的正方形,
底面
,点
在
上,
.
(1)求证:
;
(2)当二面角
的正弦值为
时,求
的值.
![](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/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e32a859e1616f7a7e4202d58d030794.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/3/65dfb804-e7e6-497f-9577-ea58b7978823.png?resizew=173)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545e18836bc7fee22f8f813a6f525d93.png)
(2)当二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1069d514c3c32aeabd274475ee209ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539dd5b8c71359e3a12f67ddf889f643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
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解答题-证明题
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适中
(0.65)
名校
【推荐1】如图,
且
,
且
且
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/c2eaca40-bdbe-4235-80b6-e2bb51c4fd55.png?resizew=159)
(1)若
为
的中点,
为
的中点,求证:
平面
;
(2)求平面
与平面
夹角的余弦值;
(3)若点
在线段
上,且直线
与平面
所成的角为
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e839ac941e8bf536ff35a12e56c7a400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53177dff9e6b7b1b6921333c71a22b68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71995b49b81d19bf9037517499b31431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d156737daa15bf9c634e9eac1687ecd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615dea62b4775453e2f0330c4d3e5719.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/c2eaca40-bdbe-4235-80b6-e2bb51c4fd55.png?resizew=159)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8257b6bd25104e07b9ad935c0a3aac4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e51817ee1ebf17c73ed21171bcfc5b5.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50cfd99a702ee24f9ef94e4b6f50101f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
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解答题-问答题
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名校
【推荐2】四棱锥
,底面为正方形
,边
为
中点,
平面
.
(1)若
为等边三角形,求三棱锥
的体积;
(2)若
的中点为
与平面
所成角为
,求
与
所成角的正切值.
![](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/a1ba61f50c7429166adadf8fa21c3627.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db807b09cc550f476b3f8fa0c6a14425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82867bb23bc067cce2848092c0222670.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb6e5a7f3f5bf8e11ce978e69365578b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c20e88a33043f4279fff360c81006e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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解答题-问答题
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(0.65)
名校
【推荐3】如图,在三棱柱
中,
是边长为2的等边三角形,
,平面
平面ABC.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/559f3292-9480-4bf7-b09b-2c7da36aba40.png?resizew=218)
(1)证明:
;
(2)若E为
的中点,直线
与平面
所成的角为45°,求直线
与平面
所成的角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252143a7b900d33862f60b2536f6a8ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0671b4776e142e17a79af5b3f0378ef7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/559f3292-9480-4bf7-b09b-2c7da36aba40.png?resizew=218)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/696da912e610974f0f437876b3d34ee3.png)
(2)若E为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1859959fdb4c5edd8056893f94a10a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69bcb3226e013650b7d8827c31dd41d0.png)
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