名校
1 . 如图,在直三棱柱
中,已知
,
分别为
的中点,求证:
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572636302245888/1572636308340736/STEM/e42820684e5f483eac04c8bffa6d736c.png)
(1)平面
平面
;
(2)
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f47d6a88e962cd790d2f159c021ec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9369aed2d8309af46ac3eaffb9cce537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473ce0e22c4edc6ef768e0c12f59e483.png)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572636302245888/1572636308340736/STEM/e42820684e5f483eac04c8bffa6d736c.png)
(1)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac01b4d05b3a28748f2f8975ec5e11d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54f845e74c18cdb2d6a80e0c0b4e85cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faa23fa14f624ad8212bda55d321362f.png)
您最近一年使用:0次
2016-12-04更新
|
4378次组卷
|
2卷引用:2016届江苏省苏北三市高三最后一次模拟考试数学试卷
名校
2 . 如图,菱
与四边形
相交于
,
平面
,
为
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/21/e305e394-a7a8-442c-a496-e1f00cc0805b.png?resizew=242)
(1)求证:
平面
;
(2)求直线
与平面
成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e53164bb576ae54daff37bec4b2eacd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c919e775030a0d72da748ff579d023b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/327832ffb5a937d88a1069395a8552af.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/21/e305e394-a7a8-442c-a496-e1f00cc0805b.png?resizew=242)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb889644ad10bffc2319e1f02640003b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
您最近一年使用:0次
2017-06-02更新
|
767次组卷
|
5卷引用:江苏省扬州中学2022-2023学年高三下学期3月质量检测数学试题
名校
3 . 如图,在四棱锥
中,底面四边形
内接于圆
,
是圆
的一条直径,
平面
,
,
是
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/28f0d022-b010-4310-a4d5-a865ba4e0523.png?resizew=187)
(1)求证:
平面
;
(2)若二面角
的正切值为2,求直线
与平面
所成角的正弦值.
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/487b14c446e989c68d0e148cc557dbf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1afe4a56c1bd9fbe4850410e4133bd24.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/28f0d022-b010-4310-a4d5-a865ba4e0523.png?resizew=187)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c372d059202ec388960b125d4a87dc84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1636b4530c0b42d0e0b649e90e3b9e85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
名校
解题方法
4 . 如图,在四棱锥
中,
平面
,
,
,
,点
,
,
分别是
,
,
的中点.
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
;
(2)求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d34ac97b116fc5c4e99d07dda1c50b3.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/895dc3dc3a6606ff487a4c4863e18509.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/82388055-03aa-413e-814f-6883d79a520a.png?resizew=161)
您最近一年使用:0次
2018-07-01更新
|
638次组卷
|
2卷引用:江苏省盐城市2017-2018学年高一下学期期末考试数学试卷
5 . 图,在三棱锥P—ABC中,△PBC为等边三角形,点
为BC的中点,AC⊥PB,平面PBC⊥平面ABC.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/19b33ef7-7e19-4984-9ba5-a9426fc9360f.png?resizew=166)
(1)求直线PB和平面ABC所成的角的大小;
(2)求证:平面PAC⊥平面PBC;
(3)已知E为
的中点,F是AB上的点,AF=
AB.若EF∥平面PAC,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/19b33ef7-7e19-4984-9ba5-a9426fc9360f.png?resizew=166)
(1)求直线PB和平面ABC所成的角的大小;
(2)求证:平面PAC⊥平面PBC;
(3)已知E为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
解题方法
6 . 在四棱锥
中,
,
,
平面
,
为
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/f36a95df-18a2-4496-8cc5-62e6baef6f5c.png?resizew=150)
(1)求证:
;
(2)求证:
平面
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a4b8b69b419c557ba61a2bdfaf4066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5305576a935a69156191babf8d184b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50539629ac736c2e2dfef90f4fa6eedc.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f5019d74a9497f861a0f755ea31d010.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/f36a95df-18a2-4496-8cc5-62e6baef6f5c.png?resizew=150)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14d4071b2a24713dfe275d0eac914045.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d27ff0b39832f094ec51e28721d739.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
名校
7 . 如图,长方体
中,
分别是
,
的中点,
分别是
,
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/2020/7/13/2505228785213440/2506584629510144/STEM/5205ad0d-c8da-4f3e-b4e4-12a27be08da5.png)
(1)求证:
平面
;
(2)求二面角
的正弦值;
(3)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/666e81326945f168fc30291f1bb2fc10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f59217a50f2f2e91e298f29ada79ee19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4217f4375caaeef4d4221143d5f6bbf.png)
![](https://img.xkw.com/dksih/QBM/2020/7/13/2505228785213440/2506584629510144/STEM/5205ad0d-c8da-4f3e-b4e4-12a27be08da5.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/502f49e759b623b5c3a8b901bb9882cc.png)
(3)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1934da56321ee721f8bebc1500054ee.png)
您最近一年使用:0次
解题方法
8 . 如图,四棱锥P﹣ABCD中,PA⊥平面ABCD,底面ABCD为矩形,E,F分别为棱AB,PC的中点
![](https://img.xkw.com/dksih/QBM/2016/1/25/1572464571105280/1572464577224704/STEM/7a679be1-f08b-4775-9b1e-453a5b3a69e7.png?resizew=173)
(1)求证:PE⊥BC;
(2)求证:EF
平面PAD.
![](https://img.xkw.com/dksih/QBM/2016/1/25/1572464571105280/1572464577224704/STEM/7a679be1-f08b-4775-9b1e-453a5b3a69e7.png?resizew=173)
(1)求证:PE⊥BC;
(2)求证:EF
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8cf209933f202dbac6e66d9137b4fb.png)
您最近一年使用:0次
9 . 如图,四棱锥P﹣ABCD的底面为矩形,侧棱PA⊥底面ABCD,且PA=AD,E,F分别是线段PA,PD的中点,H在线段AB上.
(1)求证:PC⊥AF;
(2)若平面PBC∥平面EFH,求证H是AB的中点;
(3)若AD=4,AB=2,求点D到平面PAC的距离.
(1)求证:PC⊥AF;
(2)若平面PBC∥平面EFH,求证H是AB的中点;
(3)若AD=4,AB=2,求点D到平面PAC的距离.
![](https://img.xkw.com/dksih/QBM/2018/12/13/2095992765210624/2097427692273664/STEM/04bfa9520c1a4a19ada3cee5d8f2745b.png?resizew=152)
您最近一年使用:0次
解题方法
10 . 如图,在四面体
中,平面
平面
,
,
,
分别为
,
,
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/2017/5/12/1685474831319040/1685618495414272/STEM/3a30ba4301dd4742b8729675934bf886.png?resizew=234)
(1)求证:
平面
;
(2)若
为
上任一点,证明:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf410aab32ba002b2c4e7343e7efd4c4.png)
![](https://img.xkw.com/dksih/QBM/2017/5/12/1685474831319040/1685618495414272/STEM/3a30ba4301dd4742b8729675934bf886.png?resizew=234)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6541c0cb89f08aa4c937c0beb915e0a7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c38413d086b38c176ed8c5b882d17641.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
您最近一年使用:0次