解题方法
1 . 如图,在四棱锥
中,底面
是长方形,
,
,点
为线段
的中点,点
在线段
上,且
.
(1)证明:平面
平面
;
(2)求点
到平面
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/d63309acbd482fba3b81dd1e3e739373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88197da08544c0dd0f8fb1359797ac9b.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e7e555c1ded79dfa64970c86c625b9e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/25/63504363-dfa4-463e-bff5-12cccd54ae40.png?resizew=170)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
您最近一年使用:0次
名校
解题方法
2 . 如图所示,在四棱锥
中,底面
为直角梯形,
∥
、
、
、
,
、
分别为
、
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/27/8372c1fd-7a2e-46d0-82d4-828a5e99b5da.png?resizew=184)
(1)证明:平面
平面
;
(2)若
与
所成角为
,求二面角
的余弦值.
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ff6d7dd48b57f03d82d2c522ee9b94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639bec6242a4b3f7bfb4b7033a67328c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62974d34de3a12418d6b700420afd1b2.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9829fc6685b59fdc609f32f30ebd9e6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/27/8372c1fd-7a2e-46d0-82d4-828a5e99b5da.png?resizew=184)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a590bdfe296689fc138d8995deae2026.png)
您最近一年使用:0次
2023-11-05更新
|
2806次组卷
|
13卷引用:新疆克拉玛依市2022届高三下学期第三次模拟检测数学(理)试题
新疆克拉玛依市2022届高三下学期第三次模拟检测数学(理)试题新疆维吾尔自治区阿克苏地库车市第二中学2023-2024学年高二上学期第二次月考(12月)数学广东省广州市奥林匹克中学2021-2022学年高二下学期6月月考数学试题辽宁省铁岭市昌图县第一高级中学2021-2022学年高一下学期期末数学试题(已下线)1.2.4 二面角(已下线)第4讲 空间向量的应用 (3)(已下线)第07讲 空间向量的应用 (2)山西省运城市稷山县稷山中学2023-2024学年高二上学期11月月考数学试题重庆市北碚区缙云教育联盟2024届高考零诊数学试题(已下线)四川省成都市第七中学2023-2024学年高二上学期12月月考数学试题北京市丰台区2023-2024学年高二上学期期末模拟数学试题江西省上饶市广丰区南山中学2023-2024学年高二上学期期末模拟数学试题河南省郑州市第十八中学2023-2024学年高二上学期期末模拟数学试题(三)
解题方法
3 . 如图,在正四棱柱ABCD-A1B1C1D1中,AA1=2AB,E、F分别为AA1、AC的中点.
(1)求证:EF∥平面CDA1B1;
(2)求EF与平面DBB1D1夹角的余弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/1/439bde18-2a8f-4c0e-95eb-d9b5d082495b.png?resizew=113)
(1)求证:EF∥平面CDA1B1;
(2)求EF与平面DBB1D1夹角的余弦值.
您最近一年使用:0次
名校
解题方法
4 . 在
中,
分别为
的中点,
,如图①,以
为折痕将
折起,使点A到达点P的位置,如图②.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/22/ab8085ba-21f0-4cb4-b005-ab6bf13e3da2.png?resizew=291)
(1)证明:
;
(2)若
平面
,且
,求点C到平面
的距离
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a204736186742e998dd00acff244a3e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/22/ab8085ba-21f0-4cb4-b005-ab6bf13e3da2.png?resizew=291)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31b05b2c4d1a2d7ccacd254f9f60ddd5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b190c8d3d7d7d0e6e959e8a52eae90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3f1bb063892dfd8f301d327e2f68feb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
您最近一年使用:0次
2023-05-21更新
|
896次组卷
|
5卷引用:新疆维吾尔自治区阿勒泰地区2023届高三三模数学(文)试题
5 . 如图,在正三棱柱ABC-A1B1C1中,AA1⊥平面ABC,D、E分别为AC、AA1的中点,AC=AA1=2.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/18/c4ab31ba-017a-443d-bb4c-198aca6429d9.png?resizew=121)
(1)求证:DE∥平面A1BC;
(2)求DE与平面BCC1B1夹角的余弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/18/c4ab31ba-017a-443d-bb4c-198aca6429d9.png?resizew=121)
(1)求证:DE∥平面A1BC;
(2)求DE与平面BCC1B1夹角的余弦值.
您最近一年使用:0次
解题方法
6 . 如图,三棱柱
的所有棱长均为1,且点
在底面上的射影是AC的中点D.
与
交于点E,
与
交于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/6/2dd38a9a-4563-428c-997e-476bbce54d07.png?resizew=208)
(1)证明:
;
(2)求几何体ABCFE的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/6/2dd38a9a-4563-428c-997e-476bbce54d07.png?resizew=208)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f35646cb29fafd1e1a214b69e4f22d.png)
(2)求几何体ABCFE的体积.
您最近一年使用:0次
2023-05-03更新
|
347次组卷
|
2卷引用:新疆乌鲁木齐市等5地2023届高三高考第二次适应性检测数学(文)试题
7 . 如图,已知三角形
是等腰三角形,
,
,
,
分别为
,
的中点,将
沿
折到
的位置如图2,且
,取线段
的中点为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/d24b0ca2-1c80-4a4f-958e-62ba4a013730.png?resizew=247)
(1)求证:
平面
;
(2)求点
到面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85d7c0126e753ca02dbab9c41829d31e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99b994835978bf95118d74885133a94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da4da3fe00569551b54fd3c9ee28864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad895b1c422b40c35be89c8bef22e834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca15691dfea154b932004966f2fbca3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a94e59ad6695d077e3f31d330d5734.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/364d6c88726d8c3bb8ed297057332bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/d24b0ca2-1c80-4a4f-958e-62ba4a013730.png?resizew=247)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d27ff0b39832f094ec51e28721d739.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
您最近一年使用:0次
2023-04-25更新
|
670次组卷
|
2卷引用:新疆喀什地区普通高考2023届高三适应性检测数学(文)试题
解题方法
8 . 如图,在直四棱柱
中,
,
,
为等腰三角形,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/22/287cf146-2a07-4116-9404-a0c650f091ac.png?resizew=184)
(1)证明:
;
(2)设侧棱
,点
在
上,当
的面积最小时,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9536a2be7b84612f45cc875a00c5a5d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a8f0043b21adab7e005fa4229b30e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5af8d5772855c6b2ded7da22db8c42a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/22/287cf146-2a07-4116-9404-a0c650f091ac.png?resizew=184)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6776b56bf28b48479d64bc135ec25264.png)
(2)设侧棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4893fbcb191420e06a239e63493626f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb49df05f2e31d005735c3f14a21d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f73a0ca4e6c794242489066fddb6c5.png)
您最近一年使用:0次
9 . 如图,边长为2的正方形
所在平面与半圆弧
所在的平面垂直,
是弧
上异于
,
的点.平面
与平面
的交线为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/fa9b6e2c-8681-4f3f-8314-2382f8ad9441.png?resizew=180)
(1)证明:
⊥平面
;
(2)点
在线段
上,满足
,当点
到平面
的距离为
时,判断
点在弧
的位置,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e8a20c1fc8a5620db5db3a74eb01201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17c5ef850e256c98ca4f033999e61311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/fa9b6e2c-8681-4f3f-8314-2382f8ad9441.png?resizew=180)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89abfe070487c1296d855093aa9596e4.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26629ff3211cf9b0e45b30a0730a3024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/072c32b9948144d040a9a83f8d11ea8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
2023-04-16更新
|
523次组卷
|
4卷引用:新疆维吾尔自治区2023届高三一模数学(文)试题
名校
解题方法
10 . 如图,在四棱锥P-ABCD中,
平面ABCD,
,
,
,
,
,点M在棱PD上,
,点N为BC中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/31/8df45557-5036-4baf-8e16-6a0d6062205c.png?resizew=182)
(1)求证:
平面PAB;
(2)求点C到平面PMN的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/491c3a4f72b84ebadd28b90711435adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8676b624f105072a3185911b25c912dd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/31/8df45557-5036-4baf-8e16-6a0d6062205c.png?resizew=182)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2615867545de2c99083579535f5aee4a.png)
(2)求点C到平面PMN的距离.
您最近一年使用:0次
2023-03-30更新
|
527次组卷
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2卷引用:新疆新和县实验中学2023届高三素养调研第一次模拟考试数学(文)试题