名校
解题方法
1 . 如图,在三棱柱
中,
,
,四边形
是菱形,
,平面ABB1A1⊥平面ABC,点
是
中点,点
是
上靠近
点的三等分点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/0367339c-fbc9-4a69-b811-46dbd0403ca0.jpg?resizew=207)
(1)证明:
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86cab6037cdd25b50d219550046a37fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/0367339c-fbc9-4a69-b811-46dbd0403ca0.jpg?resizew=207)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4b5068a142c39664e25539d27be030b.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a8035fc825a001d7d9a3dacd8271662.png)
您最近一年使用:0次
2021-06-03更新
|
1553次组卷
|
6卷引用:7.5 空间向量求空间角(精讲)-【一隅三反】2022年高考数学一轮复习(新高考地区专用)
(已下线)7.5 空间向量求空间角(精讲)-【一隅三反】2022年高考数学一轮复习(新高考地区专用)(已下线)秘籍06 空间向量与立体几何(理)-备战2022年高考数学抢分秘籍(全国通用)(已下线)专题19 空间几何解答题(理科)-1百师联盟2021届高三冲刺卷(二)新高考卷数学试题浙江省绍兴市鲁迅中学2022-2023学年高二普通班上学期期末模拟数学试题江西省宜春市宜丰县宜丰中学2022-2023学年高二上学期第三次月考(12月)数学试题
2 . 如图,在四棱锥
中,四边形
是梯形,
平面
.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5caaa75b2dee1ca5917603d4d0ebe30.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/8962de42-273b-40ff-a110-f410b196ae11.png?resizew=177)
(1)证明:
平面
;
(2)求三棱锥
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/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/620459127bb3b791235396c3143aa499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5caaa75b2dee1ca5917603d4d0ebe30.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/8962de42-273b-40ff-a110-f410b196ae11.png?resizew=177)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011abe509df00fe9410ab08b585ad7db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8768996ca9a0f2c5d9a19abbd54df.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a35b3671adbe86df7b0e40a4f94b4062.png)
您最近一年使用:0次
解题方法
3 . 已知三棱锥
的侧棱
,
.且
.
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712424741462016/2714552814379008/STEM/066009fd8dd34da6bfd4fa60669921d0.png?resizew=195)
(1)证明:
;
(2)求点M到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fd1bc6147d69777b26a35d48522f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb1f2daed50be20359046d8019f13b33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5511eb89a3eca96985ede732a3e78e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8dcb266efb6ab5561259f0eb0ad2c3c.png)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712424741462016/2714552814379008/STEM/066009fd8dd34da6bfd4fa60669921d0.png?resizew=195)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dac3b144cadc3c155f9bcc54766364a5.png)
(2)求点M到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
您最近一年使用:0次
4 . 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/2021/4/25/2707316694630400/2712544203808768/STEM/0dc589e6-1f40-411d-89dd-a0e505ba98c4.png?resizew=218)
(1)证明
;
(2)当
为线段
的中点时,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/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfaefb10f82b89802bb420b3c41de1bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b6ff342277250410a6e35cddbc66a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2021/4/25/2707316694630400/2712544203808768/STEM/0dc589e6-1f40-411d-89dd-a0e505ba98c4.png?resizew=218)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/519b51860ce9066e3a4807a7b7cdf58b.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/881129039cb98be128af55ffa1d3b7dc.png)
您最近一年使用:0次
名校
5 . 如图,在四棱锥
中,
平面
,底面
是直角梯形,其中
,
,
,
,E为棱
上的点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/539de07f-0b4b-4cc1-9bcd-10da86d0f8a4.png?resizew=154)
(1)若F为棱
的中点,求证:
平面
;
(2)(i)求证
平面
;
(ii)设Q为棱
上的点(不与C,P重合),且直线
与平面
所成角的正弦值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.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/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abfb2735e1683a6ae86b5b97a0032e4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab2c27eac56fffa4cd7dbe1dcdf1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b41744ec71119e7264ef9673a35805a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/539de07f-0b4b-4cc1-9bcd-10da86d0f8a4.png?resizew=154)
(1)若F为棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)(i)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(ii)设Q为棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3d566704b44ea4ef1f99c37bd46902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2942447b6af4f2749668439d5ee03a7.png)
您最近一年使用:0次
2021-04-11更新
|
1104次组卷
|
4卷引用:一轮复习大题专练50—立体几何(线面角2)—2022届高三数学一轮复习
(已下线)一轮复习大题专练50—立体几何(线面角2)—2022届高三数学一轮复习天津市耀华中学2022届高三暑假线上调研数学试题(已下线)专题02 空间向量与立体几何的典型题(二)-【尖子生专用】2021-2022学年高二数学考点培优训练(人教A版2019选择性必修第一册)北京市清华大学附属中学2020-2021学年高二上学期期末考试数学试题
名校
解题方法
6 . 农历五月初五是端午节,民间有吃粽子的习惯,粽子又称粽籺,俗称“粽子”,古称“角黍”,是端午节大家都会品尝的食品,传说这是为了纪念战国时期楚国大臣、爱国主义诗人屈原如图,平行四边形形状的纸片是由六个边长为
的正三角形构成的,将它沿虚线折起来,可以得到如图所示粽子形状的六面体,则该六面体的体积为_________ ,若该六面体内有一球,则该球表面积的最大值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/2021/3/15/2678517792784384/2689811373416448/STEM/c7b73db0d60941d9b013fb766329be03.png?resizew=333)
您最近一年使用:0次
2021-03-31更新
|
647次组卷
|
7卷引用:二轮拔高卷02-【赢在高考·黄金20卷】备战2022年高考数学模拟卷(新高考专用)
2021·全国·模拟预测
名校
7 . 如图,在菱形
中,
,沿
将
折起到
的位置,得到三棱锥
,若三棱锥
的体积最大时
,则此时三棱锥
的外接球的表面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb8fb552b9e21dbaba74d11aa747790.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acee03d4bb4667b6c345221b6c9b0fa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a9ec3b527947cad9caa4537e0cb7e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a9ec3b527947cad9caa4537e0cb7e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea3e27f6e6d1592408508cc9fd14d480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a9ec3b527947cad9caa4537e0cb7e7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/16/af9224cc-8ca1-471c-8b26-18261abd9f09.png?resizew=176)
您最近一年使用:0次
2021-03-22更新
|
1493次组卷
|
7卷引用:押第16题 立体几何综合-备战2021年高考数学(文)临考题号押题(全国卷2)
(已下线)押第16题 立体几何综合-备战2021年高考数学(文)临考题号押题(全国卷2)(已下线)模块六 立体几何 大招3 外接球问题之双外心模型(已下线)第二章 立体几何中的计算 专题六 几何体的外接球、棱切球、内切球 微点14 多边形折叠成模型综合训练【基础版】(已下线)2021年新高考测评卷数学(第六模拟)(已下线)8.3.2 圆柱、圆锥、圆台、球表面积和体积(分层作业)-【上好课】2022-2023学年高一数学同步备课系列(人教A版2019必修第二册)河南省安阳市文峰区第一中学2021-2022学年高一下学期数学(文)期末考试试题河南省安阳市林州市2021-2022学年高二下学期期末数学试题
8 . 设某几何体的三视图如图(尺寸的长度单位为
),
![](https://img.xkw.com/dksih/QBM/2021/2/24/2664966744375296/2667903068471296/STEM/c5d7b5ce-3816-452c-917a-f4603a165408.png)
(1)用斜二测画法画出该几何体的直观图(不写画法);
(2)求该几何体最长的棱长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://img.xkw.com/dksih/QBM/2021/2/24/2664966744375296/2667903068471296/STEM/c5d7b5ce-3816-452c-917a-f4603a165408.png)
(1)用斜二测画法画出该几何体的直观图(不写画法);
(2)求该几何体最长的棱长.
您最近一年使用:0次
解题方法
9 . 如图,三棱锥
中,
,
,
是等边三角形,E为
三等分点(靠近C点).
![](https://img.xkw.com/dksih/QBM/2021/2/14/2657961818071040/2658478787354624/STEM/19cce046fa5c43e2bab5c612a1883c5b.png?resizew=276)
(Ⅰ)求证:
;
(Ⅱ)当
时,求
与平面
所成线面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f80137ee8af4684ce558242d8b3f1459.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13c772461aef1d9d715129636739748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0005e1ef60f6ddc5f9a83e3de1ef3b2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2021/2/14/2657961818071040/2658478787354624/STEM/19cce046fa5c43e2bab5c612a1883c5b.png?resizew=276)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4999d4fbcbe15f78c29d518f25d317c2.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75a2bdadae954b8eb129f2bef8d0a263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
您最近一年使用:0次
10 . 空间三条直线
,
,
两两异面,则与三条直线都相交的直线有___________ 条.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次