名校
解题方法
1 . 三棱锥
中,
为等边三角形,
,
,二面角
的大小为150°,则三棱锥
的外接球的表面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/587458141d890533c0c32aa249a27ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec2524be492bca0d1566bf848066f10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
2 . 如图,在矩形
中,
为
边的中点,将
沿
翻折,得到四棱锥
.设线段
的中点为
,在翻折过程中,有下列三个命题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/99ae4dd7-fa09-4749-a3bc-ca91d5a44551.png?resizew=240)
①总有
平面
;
②存在某个位置,使
与
所成的角为
;
③三棱锥
的体积的最大值为
.
其中正确的命题是___________ .(写出所有正确命题的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfdcde01d0b8d46415f598db47a27b4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/552a56a0fa0d1f3ed4cb201f1f0fbbf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/99ae4dd7-fa09-4749-a3bc-ca91d5a44551.png?resizew=240)
①总有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f369bec2d5682bf6b8b317a08aff546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657dffbd3623b705f871878fbd9df57e.png)
②存在某个位置,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
③三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1290b2fd10d49337a7420fc368cfea75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c9298da3cd8b9db58692e0173f3fd3.png)
其中正确的命题是
您最近一年使用:0次
2021-03-25更新
|
305次组卷
|
14卷引用:安徽省蚌埠第三中学2019-2020学年高二上学期期中数学(理)试题
安徽省蚌埠第三中学2019-2020学年高二上学期期中数学(理)试题北京市2019届高三数学理一轮复习典型题专项训练:立体几何(已下线)2018年10月21日 《每日一题》一轮复习(文数)-每周一测【全国百强校】贵州省遵义市第四中学2018-2019学年高二上学期第一次月考数学(文)试题【全国百强校】北京市人大附中2019届高考信息卷(二)理科数学试题河北省承德市隆化县存瑞中学2019-2020学年高三上学期第二次质检数学(理)试题江西省信丰中学2018-2019学年高二上学期第四次月考数学(理A)试题安徽省合肥市巢湖市四中2019-2020学年高二上学期第四次月考数学试题宁夏六盘山高级中学2021届高三上学期第二次月考数学(理)试题北京市第八十中学2021届高三12月月考数学试题北京市中关村中学2021届高三3月月考数学试题北京市第五十七中学2021-2022学年高二10月月考数学试题辽宁省部分高中2021-2022学年高三上学期期中评测数学试题广西壮族自治区桂林市等2地2023届高三下学期3月月考数学(理)试题
3 . 如图,在三棱锥
中,
底面
,
为
的中点
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/e6cd5965-b770-470c-b9a2-201717e78e7d.png?resizew=154)
求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/174877a86142b396b2ce25aaab77988d.png)
若二面角
的大小为
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca1388bf38414bb9c9568ae7648b7986.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/e6cd5965-b770-470c-b9a2-201717e78e7d.png?resizew=154)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/174877a86142b396b2ce25aaab77988d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b33b7213d99a817bff19bcf740a0697c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c20e88a33043f4279fff360c81006e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
您最近一年使用:0次
2019-03-23更新
|
692次组卷
|
5卷引用:2019届安徽省蚌埠市第二中学高三下学期最后一次模拟数学(理)试题
名校
4 . 如图,两个圆锥和一个圆柱分别有公共底面,且两圆锥的顶点和底面的圆周都在同一球面上.若圆柱的侧面积等于两个圆锥的侧面积之和,且该球的表面积为
,则圆柱的体积为
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/5c64cddd-a82d-4706-b363-5a6df96b71de.png?resizew=146)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95345846d2dd4dfa042a9093c62a8b82.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/5c64cddd-a82d-4706-b363-5a6df96b71de.png?resizew=146)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-05-07更新
|
632次组卷
|
4卷引用:2019届安徽省蚌埠市第二中学高三下学期最后一次模拟数学(文)试题
名校
解题方法
5 . 如图1,边长为4的正方形ABCD中,点E,F分别是边AB,BC的中点,将
分别沿DE,DF折起,使A,C两点重合于点P如图2.设EF与BD交于点O,过点P作
垂足为H.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/29bd7dab-63ea-43f7-89f2-479ceb9ad270.png?resizew=383)
(1)求证:
平面
;
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7913f1ec5797e4b2173b984f3aece5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc0e2ad136078fd3597a61e044d405e6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/29bd7dab-63ea-43f7-89f2-479ceb9ad270.png?resizew=383)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b17622ea6f6f5afd1ad817a557e5889d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87e1fe20bb0e8292e993657e14bc79a.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357f2bfe607af1cdef85dfc603e3192f.png)
您最近一年使用:0次
2020-11-27更新
|
434次组卷
|
2卷引用:安徽省蚌埠市第三中学2019-2020学年高二上学期期中数学(文)试题
名校
6 . 圆锥的母线长是
,侧面积是
,则该圆锥的高为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9609625b502348556ff8ba32deac8caa.png)
您最近一年使用:0次
2020-01-12更新
|
469次组卷
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3卷引用:安徽省蚌埠二中2019-2020学年高二下学期开学检测理科数学试题
名校
7 . 如图,三棱柱
中,
,
,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/70e5f4f4-5a3e-46df-8698-9fed8409a7d2.png?resizew=198)
(1)求证:
;
(2)若
,
,
为
的中点,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d89ba4036a5d18ec4abed44d7fd8e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea77ee9aae8a89ab14e5cd8481b3747a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0671b4776e142e17a79af5b3f0378ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/70e5f4f4-5a3e-46df-8698-9fed8409a7d2.png?resizew=198)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc0a886f1192d450ced9fd875e78425e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afcd94482e33b0bb3a49246e119e511.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a9e7ddd20dd553eb97360ef04d951d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86f0c01cdd682431365cf43dfba98bdb.png)
您最近一年使用:0次
2019-03-08更新
|
619次组卷
|
2卷引用:2019届安徽省蚌埠市第二中学高三下学期4月质量检测数学(文)试题
8 . 如图,等腰直角三角形ABC所在的平面与半圆弧AB所在的平面垂直,AC⊥AB,P是弧AB上一点,且∠PAB=30°.
![](https://img.xkw.com/dksih/QBM/2020/6/9/2480942574239744/2481757743964160/STEM/ac9ffb71-ca66-4338-8775-a8b2840174dc.png?resizew=254)
(1)证明:平面BCP⊥平面ACP;
(2)若Q是弧AP上异于A、P的一个动点,当三棱锥C-APQ体积最大时,求二面角A-PQ-C的余弦值.
![](https://img.xkw.com/dksih/QBM/2020/6/9/2480942574239744/2481757743964160/STEM/ac9ffb71-ca66-4338-8775-a8b2840174dc.png?resizew=254)
(1)证明:平面BCP⊥平面ACP;
(2)若Q是弧AP上异于A、P的一个动点,当三棱锥C-APQ体积最大时,求二面角A-PQ-C的余弦值.
您最近一年使用:0次
2020-06-10更新
|
417次组卷
|
5卷引用:安徽省蚌埠市2020届高三下学期高考模拟考试数学(理)试题
安徽省蚌埠市2020届高三下学期高考模拟考试数学(理)试题安徽省蚌埠市2020届高三下学期第四次教学质量检查数学(理)试题(已下线)数学-6月大数据精选模拟卷05(天津卷)(满分冲刺篇)广东省佛山市第一中学2019-2020学年高一下学期6月联考数学试题(已下线)专题22第一篇 热点、难点突破(测试卷一)(测)(理科)第一篇 热点、难点突破篇-《2022年高考理科数学二轮复习讲练测》(全国课标版)
名校
解题方法
9 . 如图,网格纸上小正方形的边长为1,粗线画出的是某几何体的三视图,则这个几何体的体积
为
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/1ca64768-257d-4325-92ec-d7f3b267651f.png?resizew=161)
为
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/1ca64768-257d-4325-92ec-d7f3b267651f.png?resizew=161)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-04-26更新
|
978次组卷
|
2卷引用:安徽省蚌埠市第二中学2018届高三4月月考数学(文)试题
10 . 如图,在边长为
的菱形
中,
,点
,
分别是边
,
的中点,
.沿
将△
翻折到△
,连接
,得到如图的五棱锥
,且
.
![](https://img.xkw.com/dksih/QBM/2015/4/1/1572058689798144/1572058695368704/STEM/4b3c1e3435c847b8a5d26f8d48f8fbf0.png?resizew=437)
(1)求证:
平面
;
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa3f4f259d60ade01bd9bf6632238e39.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d53adfda9881851ffcab475537f8165e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261790c66cc71ee3898afabad0c09f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d246f9eceab371ebf47a47c2f11a4ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b99271fe84300da304205280de1b63e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eafd8ea63ced193942ba59fcb24ae73b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7dcba0c73b994832543511e2a1681ad.png)
![](https://img.xkw.com/dksih/QBM/2015/4/1/1572058689798144/1572058695368704/STEM/4b3c1e3435c847b8a5d26f8d48f8fbf0.png?resizew=437)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5928c98b341b16d4b5a5b931d2929d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83efd6afec2f73c52e4b027a12d9f817.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a43c429d2676774d09e2509d9e26a0d.png)
您最近一年使用:0次
2016-12-04更新
|
1001次组卷
|
9卷引用:安徽省蚌埠市第一中学2019届高三上学期期中考试数学(文)试题