1 . 如图,在三棱锥
中,
,
,
,
,D为线段
的中点,E为线段
上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/e59a5fab-1e66-400f-8cdc-4b3d8cb28695.png?resizew=233)
(1)求证:平面
平面
;
(2)当
平面
时,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbb05b8b630052ff544249ebd72d95d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a15a004f7d47ed595f063e60075223a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81981fd7b343f4fe2db8f36eb66c1ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/e59a5fab-1e66-400f-8cdc-4b3d8cb28695.png?resizew=233)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3547a914468b082d8d8741b974a03190.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c2b786c64e6a9ed2ec5670cde74f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1112ffa328ed486ffc5e4a605eb510e.png)
您最近一年使用:0次
2021-06-16更新
|
813次组卷
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3卷引用:河南省名校联盟2020-2021学年高二下学期六月联考文科数学试题
名校
解题方法
2 . 已知
,
分别是正方体
的棱
,
上的动点(不与顶点重合),则下列结论错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
A.![]() |
B.![]() ![]() |
C.四面体![]() |
D.![]() ![]() |
您最近一年使用:0次
2021-06-11更新
|
687次组卷
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5卷引用:河南省郑州市中牟县第一高级中学2021届高三全真模拟训练四理科数学试题
3 . 如图,在正三棱柱
中,
分别是棱
的中点,点E在侧棱
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/4bf8b49b-9b9c-4363-a408-edb5128c0d1b.png?resizew=141)
(1)求证:平面MEB⊥平面BEN;
(2)求三棱锥C-BEM的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26320feee16e38b652b17efeddd38411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42060342fda9080f28e53c7ac77c5ab3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a696a182fff038a86b2bbe8ca099442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1586681cc763024b659b07dc4ccd02e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/4bf8b49b-9b9c-4363-a408-edb5128c0d1b.png?resizew=141)
(1)求证:平面MEB⊥平面BEN;
(2)求三棱锥C-BEM的体积.
您最近一年使用:0次
2021-06-06更新
|
495次组卷
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2卷引用:河南省郑州外国语学校2021-2022学年高三上学期调研考试三理科数学试题
4 . 如图所示,在四棱锥
中,底面是边长为
的正方形,
,且
平面
,M为PC上的动点,若OM的最小值为4,则当OM取得最小值时,四棱锥
的体积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa82a15632a545ce2cc6dc998899807.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23f01af749100e1888bba06268843db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4117625867a74cd022584500c76deca.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/1103c20e-fa4f-4243-a099-50e2a044c472.png?resizew=166)
您最近一年使用:0次
2021-06-01更新
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299次组卷
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2卷引用:河南省天一大联考2020-2021学年高二年级阶段性测试(四)(5月)文数试题
5 . 已知四棱锥
的顶点都在球
上,
平面
,底面
为矩形,
,若球
的表面积为
,则四棱锥
的体积为___________ ;若
,
分别是
,
的中点,则点
到平面
的距离为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585288e61871608f6ff8f7e4a0beafbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f5f9251b20115e4f9bfc2005ef26f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
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2021-05-31更新
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559次组卷
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5卷引用:河南省安阳市2021届高三三模拟考试理科数学试题
河南省安阳市2021届高三三模拟考试理科数学试题河南省安阳市2021届高三下学期第三次模拟考试文科数学试题(已下线)模块综合练01 立体几何-2022年高考数学(理)一轮复习小题多维练(全国通用)2022届高三普通高等学校招生全国统一考试 数学预测卷(五)(已下线)模块五 空间向量与立体几何-1
6 . 三星堆遗址,位于四川省广汉市,距今约三千到五千年.2021年2月4日,在三星堆遗址祭祀坑区4号坑发现了玉琮,玉琮是一种内圆外方的筒型玉器,是一种古人用于祭祀的礼器.假定某玉琮中间内空,形状对称,如图所示,圆筒内径长
,外径长
,筒高
,中部为棱长是
的正方体的一部分,圆筒的外侧面内切于正方体的侧面,则该玉琮的体积为( )
![](https://img.xkw.com/dksih/QBM/2021/5/24/2728166207881216/2730799880470528/STEM/6b50da38-607e-451e-a74a-3cfba9cc415c.png?resizew=334)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78d0ab561d0c9bb9099772c596af8bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976260cbf5e30856d4fd37a4b0a671a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095ab4a92bf822e175d370e6d0c8a730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976260cbf5e30856d4fd37a4b0a671a7.png)
![](https://img.xkw.com/dksih/QBM/2021/5/24/2728166207881216/2730799880470528/STEM/6b50da38-607e-451e-a74a-3cfba9cc415c.png?resizew=334)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-05-28更新
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12卷引用:河南省焦作市2021届高三考前适应性考试数学(理科)数学试题
河南省焦作市2021届高三考前适应性考试数学(理科)数学试题河南省2021届高三年级仿真模拟考试(二)数学理科试题河南省2021届高三年级仿真模拟考试(二)数学文科试题河南省2021届高三高考数学(理)仿真模拟试题(二)河南省焦作市2021届高三高考考前适应性数学(文)试题河南省2021届高三仿真模拟考试(二)数学(文)试题江西省2021届高三5月联考数学(文)试题江西省2021届高三5月联考数学(理)试题吉林延边朝鲜族自治州汪清县第四中学2021届高三八模数学(文)试题(已下线)8.3简单几何体的表面积与体积C卷河北省沧州市任丘市第一中学2020-2021学年高一下学期第二次阶段考数学试题(已下线)专题34 立体几何解答题中的体积求解策略-学会解题之高三数学万能解题模板【2022版】
7 . 如图,已知四棱锥
的底面是边长为
的正方形,且平面
平面
,
,
分别为棱
,
的中点,
,
,
,
为侧棱
上的三等分点(点
靠近点
).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/5b75d920-c38a-431d-9b83-1973b15fa5e0.png?resizew=251)
(1)求证:
平面
;
(2)求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/877582b5387278008d14fe5932622fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/7fee21c4658f6139d9eec1db0096922f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/191eedb50c940975fb4c0e8a534c418f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/defa5b53043ae802bb1af7d14374406d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/5b75d920-c38a-431d-9b83-1973b15fa5e0.png?resizew=251)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdcbfb4d473b0a5a5b07fcdcb9ee3644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c020d9691ea4150813a7dcf9f87fc0.png)
(2)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03896ac4ca05c01d7e5eb962c8d2e49d.png)
您最近一年使用:0次
名校
解题方法
8 . 在三棱锥
中,底面
是面积为
的正三角形,若三棱锥
的每个顶点都在球
的球面上,且点
恰好在平面
内,则三棱锥
体积的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbd3e8cf8325999cde03adf845d3dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-05-22更新
|
1412次组卷
|
14卷引用:河南省2021届高三仿真模拟考试数学(文科)试题
河南省2021届高三仿真模拟考试数学(文科)试题河南省2021届高三仿真模拟考试数学(理科)试题河北省沧州市2021届高三二模数学试题湖南省永州市省重点中学2021届高三下学期5月联考数学试题辽宁省朝阳市2021届高三四模考试数学试题辽宁省2021届高三5月冲刺数学试题广东省部分学校2021届高三下学期5月联考数学试题辽宁省抚顺市六校协作体2020-2021学年高三5月二模数学试题山西省运城市新康国际实验学校2021届高三下学期5月测试数学(文)试题山西省晋中市新一双语学校2021届高考模拟数学(文)试题(已下线)13.4 立体几何初步综合练习-2020-2021学年高一数学同步课堂帮帮帮(苏教版2019必修第二册)安徽省皖淮名校2020-2021学年高二下学期5月联考文科数学试题安徽省皖淮名校2020-2021学年高二下学期5月联考理科数学试题江西省南昌市豫章中学2021-2022学年高二上学期入学调研(A)数学(文)试题
解题方法
9 . 如图,四棱台
的上、下底面均为菱形,
平面
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2021/5/10/2718212871004160/2725608887386112/STEM/985d766bc46044e4956de7db17d423c3.png?resizew=225)
(1)证明:平面
平面
;
(2)求四棱台
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a8bfe2553e852df73185d017c0a62fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2444f273ddb691a19ed359dd2bd73bf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2a61472439de1ba85cfe33840b775f2.png)
![](https://img.xkw.com/dksih/QBM/2021/5/10/2718212871004160/2725608887386112/STEM/985d766bc46044e4956de7db17d423c3.png?resizew=225)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0fc4556d2b9a3395c624730c253b7db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfb3f0b5d8bf98eeff66f43b7dcbb4be.png)
(2)求四棱台
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
您最近一年使用:0次
解题方法
10 . 如图,四棱锥
中,底面
为矩形,
,E为CD中点.
![](https://img.xkw.com/dksih/QBM/2021/5/11/2718915193741312/2725367495073792/STEM/9b6cdb72-37af-47e3-a94d-e06d14a1c14d.png)
(1)线段PC上是否存在一点F,使得
;
(2)在(1)的条件下,求点E到平面ADF的距离.
![](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/dedab593b291893a5af9719aa224ecbb.png)
![](https://img.xkw.com/dksih/QBM/2021/5/11/2718915193741312/2725367495073792/STEM/9b6cdb72-37af-47e3-a94d-e06d14a1c14d.png)
(1)线段PC上是否存在一点F,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d498c5bd6f0bc27ab2ebd2c003c666.png)
(2)在(1)的条件下,求点E到平面ADF的距离.
您最近一年使用:0次
2021-05-20更新
|
997次组卷
|
4卷引用:河南省郑州市2021届高三三模文科数学试题