名校
1 . 如图,在正三棱锥
中,有一半径为1的半球,其底面圆O与正三棱锥的底面贴合,正三棱锥的三个侧面都和半球相切.设点D为BC的中点,
.
分别表示线段BC和PD长度;
(2)当
时,求三棱锥的侧面积S的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78ae694fbd533c634112611e02f58559.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f102439ebd1efd422f04209ecec2bf.png)
您最近一年使用:0次
2022-01-18更新
|
1854次组卷
|
6卷引用:山东省烟台市2021-2022学年高三上学期期末数学试题
山东省烟台市2021-2022学年高三上学期期末数学试题广东省中山市2021-2022学年高二下学期期末数学试题江西省吉安市第一中学2024届高三“九省联考”考后适应性测试数学试题(一)(已下线)新题型01 新高考新结构二十一大考点汇总-3(已下线)专题04 立体几何山东省烟台第一中学2023届高三上学期1月考试数学试题
2 . 如图,在多面体
中,
和
均为等边三角形,D是
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/04d2f20d-92a3-4fef-8312-fe0ae40afd36.png?resizew=160)
(1)证明:
;
(2)若
,求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dff800bc740bbdf43a8893586c601c01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb49df05f2e31d005735c3f14a21d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22f3143a34f1f78bc5ef35c24d4beb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/04d2f20d-92a3-4fef-8312-fe0ae40afd36.png?resizew=160)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89b87b3be10408261827291574434d8e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b89ec12d19b15faaeb31e49eb65bf14f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dff800bc740bbdf43a8893586c601c01.png)
您最近一年使用:0次
2022-01-15更新
|
159次组卷
|
2卷引用:陕西省安康市2021-2022学年高三上学期期末文科数学试题
3 . 如图,四边形
为正方形,若平面
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/1/5/2887979288412160/2890845170040832/STEM/91c72497-72ea-44c2-a345-b6f4f97c2aa5.png?resizew=149)
(1)在线段
上是否存在点
,使平面
平面
,请说明理由;
(2)求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b8a96aa2ac20fce0b875f2e7f03b76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0e5697eca3f5205cb7b343648240bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2fc7a36f9d217f4a7d6e60d17e04199.png)
![](https://img.xkw.com/dksih/QBM/2022/1/5/2887979288412160/2890845170040832/STEM/91c72497-72ea-44c2-a345-b6f4f97c2aa5.png?resizew=149)
(1)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ea0eefe8be607ab4e05786dda72c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8257b6bd25104e07b9ad935c0a3aac4.png)
(2)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
您最近一年使用:0次
2022-01-09更新
|
1079次组卷
|
8卷引用:黑龙江省哈尔滨德强学校2021-2022学年高三上学期期末考试数学(文)试题(清北班)
黑龙江省哈尔滨德强学校2021-2022学年高三上学期期末考试数学(文)试题(清北班)四川省泸州市2021-2022学年高三第一次教学质量诊断性考试数学(文)试题宁夏回族自治区银川一中2022届高考三模数学(文)试题陕西省咸阳市武功县普集高级中学2023届高三下学期九模文科数学试题(已下线)考点9 垂直的判定与性质 2024届高考数学考点总动员【练】(已下线)第八章 立体几何初步(选拔卷)-【单元测试】2021-2022学年高一数学尖子生选拔卷(人教A版2019必修第二册)江西省抚州市临川第一中学2021-2022学年高二下学期第一次月考数学(文)试题专题6.4 空间中的垂直关系-2021-2022学年高一数学北师大版2019必修第二册
20-21高三下·浙江·期末
4 . 如图是一个以
为底面的直三棱柱被一平面所截得到的几何体,截面为
,已知
,
,
,
,
,求:
![](https://img.xkw.com/dksih/QBM/2021/5/29/2731411846053888/2731580185157632/STEM/5b301483-fdb1-4d8f-a77f-fd6a0fc8c2d7.png?resizew=193)
(1)该几何体的体积;
(2)该几何体的表面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/928e0314a115e555de5222d39637f6eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f5c39420ac5678683d0489ddd0362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f3e58edd1f900ca82bb2a3058293f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc416a5b8dc234628e7475387888d82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c122ca7141c43c15c783968f5f0dbc19.png)
![](https://img.xkw.com/dksih/QBM/2021/5/29/2731411846053888/2731580185157632/STEM/5b301483-fdb1-4d8f-a77f-fd6a0fc8c2d7.png?resizew=193)
(1)该几何体的体积;
(2)该几何体的表面积.
您最近一年使用:0次
5 . 如图①,是由正三角形
和正方形
组成的平面图形,其中
;将其沿
折起,使得
,如图②所示.
![](https://img.xkw.com/dksih/QBM/2021/1/26/2644559257305088/2646416300343296/STEM/8e42d118-2bbf-47ef-9334-42f57c6c66da.png?resizew=202)
![](https://img.xkw.com/dksih/QBM/2021/1/26/2644559257305088/2646416300343296/STEM/e532ecee-8a3a-4c97-a163-c9a2bf46cf5a.png?resizew=216)
(1)证明:图②中平面
平面
;
(2)在线段
上取一点
,使
,当三棱锥
的体积为
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c14a66ed4bd66df65bc42c4ac1ed15c.png)
![](https://img.xkw.com/dksih/QBM/2021/1/26/2644559257305088/2646416300343296/STEM/8e42d118-2bbf-47ef-9334-42f57c6c66da.png?resizew=202)
![](https://img.xkw.com/dksih/QBM/2021/1/26/2644559257305088/2646416300343296/STEM/e532ecee-8a3a-4c97-a163-c9a2bf46cf5a.png?resizew=216)
(1)证明:图②中平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5f0cfc1049f84a04c81bd213afb8d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eac8bfbdcde7e401d1f18f9a476945e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d492a2248463e0c0199a25d0f76d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738bc12c4d44438814ce6f606fda695a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2021-01-29更新
|
1873次组卷
|
7卷引用:安徽省宣城市2020-2021学年高三上学期期末数学(文)试题
安徽省宣城市2020-2021学年高三上学期期末数学(文)试题(已下线) 专题18 几何体的表面积与体积的求解 (测)-2021年高三数学二轮复习讲练测(新高考版)(已下线) 专题22 几何体的表面积与体积的求解 (测)-2021年高三数学二轮复习讲练测(文理通用)江西省赣州市南康区唐江中学2021届高三3月综合性考试数学(文)试题(已下线)专题5 综合闯关(提升版)苏教版(2019) 必修第二册 过关斩将 章节测试 第13章 立体几何初步(已下线)第31讲 空间几何体体积及点到面的距离问题4种题型
6 . 已知,在三棱锥
中,
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad8c4151089079a3d729a74ca22e5e9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/22ef5f04-b5bb-416f-b692-c2d6c1f5d354.png?resizew=175)
(1)求证:平面
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbb9be0889b7ef7bee60b26eece6845b.png)
(2)若
是三棱锥
外接球上任一点,求三棱锥
体积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6d682b584f0698a9a5c7a07d3102ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad8c4151089079a3d729a74ca22e5e9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/22ef5f04-b5bb-416f-b692-c2d6c1f5d354.png?resizew=175)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbb9be0889b7ef7bee60b26eece6845b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a9ec3b527947cad9caa4537e0cb7e7.png)
您最近一年使用:0次
名校
解题方法
7 . 如图,在多面体ABCDEF中,ADEF为矩形,ABCD为等腰梯形,
,
,
,且
,平面
平面
,M,N分别为EF,CD的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/ae8d846e-23bd-47c1-b721-896b847cb855.png?resizew=161)
(1)求证:
平面
;
(2)若
,求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbb0674d65e9df5aeee26a98a1118f82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8915e8e775538d41debf1933102c6b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9367449a5847eade07e69f4feddcb027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/ae8d846e-23bd-47c1-b721-896b847cb855.png?resizew=161)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4734735213b599a9915e1ed91a5d8ce4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377b5f7197e5bd1afeea4d931307956a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
您最近一年使用:0次
2020-08-18更新
|
325次组卷
|
7卷引用:四川省泸县第四中学2022-2023学年高三上学期期末考试数学(文)试题
名校
解题方法
8 . 已知三棱锥
中,
与
均为等腰直角三角形,且
,
,
为
上一点,且
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/3caa1c6d-ee21-41bb-8761-ecd5664213b7.png?resizew=189)
(1)求证:
;
(2)过
作一平面分别交
,
,
于
,
,
,若四边形
为平行四边形,求多面体
的表面积.
![](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/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8e9ec412ea0355e4e5cd06c60e5fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0870247d35bf60ae14239f608da44759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b190c8d3d7d7d0e6e959e8a52eae90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/3caa1c6d-ee21-41bb-8761-ecd5664213b7.png?resizew=189)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77e3c1c236141d6118429fade0a9b9d.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed21f410e8e459d9bd363a739d37336e.png)
您最近一年使用:0次
2020-05-22更新
|
1310次组卷
|
5卷引用:四川省泸县第五中学2022-2023学年高三上学期期末考试数学(文)试题
9 . 如图所示的多面体ABCDEF满足:正方形ABCD与正三角形FBC所在的两个平面互相垂直,FB∥AE且FB=2EA.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/3e3eec0a-d6cd-42b2-9407-0879d3743e73.png?resizew=159)
(1)证明:平面EFD⊥平面ABFE;
(2)若AB=2,求多面体ABCDEF的体积.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/3e3eec0a-d6cd-42b2-9407-0879d3743e73.png?resizew=159)
(1)证明:平面EFD⊥平面ABFE;
(2)若AB=2,求多面体ABCDEF的体积.
您最近一年使用:0次
10 . 如图,在四棱锥
中,底面
为正方形,
底面
,
,
为线段
的中点,
为线段
上的动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/6d0e80f4-f26a-4aee-9fdc-228773ea3ce1.png?resizew=185)
(1)平面
与平面
是否互相垂直?如果垂直,请证明;如果不垂直,请说明理由.
(2)若
,
为线段
的三等分点,求多面体
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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829f9180ddd9aa1a0ee0dc520f4e0b5f.png)
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/6d0e80f4-f26a-4aee-9fdc-228773ea3ce1.png?resizew=185)
(1)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995a088fcda96211dbd41daab559c614.png)
您最近一年使用:0次
2020-01-17更新
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359次组卷
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2卷引用:福建省福州市2019-2020学年高三上学期期末质量检测数学(文)试题