如图,在正三棱柱
中,
,
分别为
,
的中点.
(1)求证:
//平面
;
(2)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/19/36876973-2718-4014-a98f-892ea7caee9e.png?resizew=139)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92105835f8075cb75dff244e908370b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6357518bce3dd75663f7841de4d26b07.png)
22-23高一下·福建厦门·期末 查看更多[3]
福建省厦门市2022-2023学年高一下学期期末质量检测数学试题(已下线)考点巩固卷16 空间几何体的表面积和体积(八大考点)-1(已下线)第一章 点线面位置关系 专题一 空间平行关系的判定与证明 微点4 直线与平面平行的判定与证明综合训练【基础版】
更新时间:2023-07-16 09:11:43
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相似题推荐
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名校
【推荐1】如图,四棱锥E—ABCD中,ABCD是矩形,平面EAB
平面ABCD,AE=EB=BC=2,F为CE上的点,且BF
平面ACE.
BE;
(2)求三棱锥D—AEC的体积;
(3)求二面角A—CD—E的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
(2)求三棱锥D—AEC的体积;
(3)求二面角A—CD—E的余弦值.
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【推荐2】如图,直三棱柱
中,
,
,侧面
为正方形,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/10/88dcde37-af11-4be5-8ec5-b051183f25a6.png?resizew=158)
(1)求证:
;
(2)求三棱锥
的体积.
![](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/44ad693aaa638917adbbbb947fadff75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d54aa94ca568fcafb24e20fc35f90c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/10/88dcde37-af11-4be5-8ec5-b051183f25a6.png?resizew=158)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3d9be20fc4638cbdb5da70bb23d6396.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da02111cf70e707c4e042bd22b8a9142.png)
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【推荐1】在如图的多面体中,
⊥平面
,
,
,
,
,
,
,
是
的中点.
(1) 求证:
平面
;
(2) 求异面直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee4a6b8ef3e79b4482388c3391d8b18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b29f27c9a3af7044faf147bdaeb3fe81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4ffb68a9ca3bf66788363bc89dab45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13bd9e8b54864ca44115d24a5aeeb83c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70801d43498c8ae772b960f0353131f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1496042c1d721cffd25053e997a9a97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6922690417492dea5c60acd5f031efa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(1) 求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307807ee10071bafbe922eb18d2517d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c96bc9a285172c48e4726ee6492670ef.png)
(2) 求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/2011/11/24/1570360762925056/1570360768315392/STEM/523f888003c24903ac9b2760a2c20095.png?resizew=252)
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适中
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【推荐2】如图,在四棱锥
中,底面
是正方形,
点
分别为线段
的中点.
![](https://img.xkw.com/dksih/QBM/2021/1/30/2647479761453056/2650331994071040/STEM/189bbade99b64707b5e90f195ade5b6c.png?resizew=170)
(1)求证:
平面
;
(2)求证:平面
平面
;
(3)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/66b92cf03c9a4fbb2e007be04b98aa12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1457d2e76a5b86de1abf121c51eb9d35.png)
![](https://img.xkw.com/dksih/QBM/2021/1/30/2647479761453056/2650331994071040/STEM/189bbade99b64707b5e90f195ade5b6c.png?resizew=170)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d781525777c7b5284dffc70b2a28a.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6501f1c913a4ef64957a2f01ab5baa15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(3)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c0089d8eb23cb703c5278aff214cd2.png)
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【推荐1】如图,已知正方体
的棱长为1,
分别是线段
上靠近
的三等分点.过点
作该正方体的截面,试求截面图形的周长和面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d689fcd45b3d2fb7627ce2051b628616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b1bb7cb7f269ff782cc9dd01fba4e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a9c254087893591862787406e45c3da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee031bc1083a2d3c3a350f93503919c4.png)
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【推荐2】在长方体
中,
,P为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/17/972bff60-3f4a-4e43-bad5-e47986a13a3d.png?resizew=255)
(1)已知过点
的平面
与平面
平行,平面
与直线
分别相交于点M,N,请确定点M,N的位置;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed557e33dca77e3a0257601967aae3a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/17/972bff60-3f4a-4e43-bad5-e47986a13a3d.png?resizew=255)
(1)已知过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0e9053b90f36cee8a6b118681a15ceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc9b42d16569ad69c38883534a0be16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecba79b0285803b1bc62d406d568b016.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc9b42d16569ad69c38883534a0be16.png)
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