解题方法
1 . 如图,四棱柱
,底面
为等腰梯形,
;
,侧面
底面
.
![](https://img.xkw.com/dksih/QBM/2020/5/21/2467731242745856/2468804215791616/STEM/cf651cc2-4ebd-4b92-b130-7aea6d578c14.png)
(1)在侧面
中能否作一条直线使其与
平行?如果能,请写出作图过程并给出证明;如果不能,请说明理由;
(2)求四面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2ac8ca651ad44f097f3b3899835e3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2c01cd6aeee3287c8594fd280ddcb12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a2e10a5aebe40a9018d5ee3ade7af8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2020/5/21/2467731242745856/2468804215791616/STEM/cf651cc2-4ebd-4b92-b130-7aea6d578c14.png)
(1)在侧面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)求四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abe68d0af6bea7c5664678e6418170ba.png)
您最近一年使用:0次
解题方法
2 . 如图,在四棱锥
的底面ABCD中,
.回答下面的问题:
内能否作一条线段,使其与DC平行?如果能,请写出作图过程并给出证明;如果不能,请说明理由;
(2)在侧面PBC中能否作出一条线段,使其与AD平行?如果能,请写出作图过程并给出证明;如果不能,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd8e727e4efc22b49649f71ae9c9d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)在侧面PBC中能否作出一条线段,使其与AD平行?如果能,请写出作图过程并给出证明;如果不能,请说明理由.
您最近一年使用:0次
2021-11-12更新
|
262次组卷
|
6卷引用:人教B版(2019) 必修第四册 逆袭之路 第十一章 立体几何初步 11.3空间中的平行关系
人教B版(2019) 必修第四册 逆袭之路 第十一章 立体几何初步 11.3空间中的平行关系(已下线)第十一章 立体几何初步 11.3 空间中的平行关系 11.3.3 平面与平面平行(已下线)第十三章本章测试(已下线)8.5 空间直线、平面的平行人教B版(2019)必修第四册课本习题习题11-3苏教版(2019)必修第二册课本习题第13章本章测试
名校
解题方法
3 . 正四棱锥
的底面正方形边长是4,
是
在底面上的射影,
,
是
上的一点,
,过
且与
、
都平行的截面为五边形
.
![](https://img.xkw.com/dksih/QBM/2020/11/25/2600436185726976/2603603820740608/STEM/9af09dca-8b60-4b65-8787-240081425a51.png)
(1)在图中作出截面
(写出作图过程);
(2)求该截面面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/634e91a3d04eb1b522444cb2378c05da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e588f65cab66cf2e5a11ee504024e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f48aa3096fb3db24874b1c6701a6ed.png)
![](https://img.xkw.com/dksih/QBM/2020/11/25/2600436185726976/2603603820740608/STEM/9af09dca-8b60-4b65-8787-240081425a51.png)
(1)在图中作出截面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f48aa3096fb3db24874b1c6701a6ed.png)
(2)求该截面面积.
您最近一年使用:0次
2020-11-29更新
|
2285次组卷
|
2卷引用:福建省莆田第一中学2020-2021学年高二上学期期中考试数学试题
解题方法
4 . 阅读下面题目及其解答过程.
以上题目的解答过程中,设置了①~⑤五个空格,如下的表格中为每个空格给出了两个选项,其中只有一个符合推理,请选出符合推理的选项,并填写在答题卡的指定位置(只需填写“A”或“B”).
如图,已知正方体![]() ![]() (Ⅰ)求证: ![]() (Ⅱ)求证:直线 ![]() ![]() 解:(Ⅰ)如图,连接 ![]() 因为 ![]() 所以 ![]() ![]() 所以①___________. 因为四边形 ![]() 所以②__________. 因为 ![]() 所以③____________. 所以 ![]() (Ⅱ)如图,设 ![]() ![]() ![]() 假设 ![]() ![]() 因为 ![]() ![]() ![]() ![]() 所以⑤__________. 又 ![]() 这样过点 ![]() ![]() ![]() 所以直线 ![]() ![]() |
空格序号 | 选项 |
① | A.![]() ![]() |
② | A.![]() ![]() |
③ | A.![]() ![]() ![]() ![]() |
④ | A.![]() ![]() |
⑤ | A.![]() ![]() ![]() |
您最近一年使用:0次
2022-03-11更新
|
703次组卷
|
2卷引用:北京市第一次普通高中2022届高三学业水平合格性考试数学试题
21-22高一下·福建·期中
名校
5 . 如图,在三棱锥
中,
和
均是边长为6的等边三角形,P是棱
上的点,
,过点P的平面
与直线
垂直,且平面
平面
.过直线l及点C的平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/3/aa110b0c-8325-43fa-8b00-1be7821a8028.png?resizew=182)
(1)在图中画出l,写出画法(不必说明理由);
(2)求证:
;
(3)若直线
与平面
所成角的大小为
,求平面
与平面
所成的锐二面角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a94d59dee2d5a8f0425b64b2083825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f63075fdeeb9e765dd696c4ff43ba1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4fce8e923062b9779553d6f282895b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb1319a44dc601303876d3dab3372660.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a392d05d3cfcbb438569b1ea9980dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/670684ed4962fcebce7b5a140510d066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/863dd235346ce076540230e8eb4122f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/138ca330a165c68e865cacd35c18a665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cec6c3f8d8a0611bf49e269bd288949d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/3/aa110b0c-8325-43fa-8b00-1be7821a8028.png?resizew=182)
(1)在图中画出l,写出画法(不必说明理由);
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a63f6aa604e3d7fc7ae8c7b587069a.png)
(3)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a392d05d3cfcbb438569b1ea9980dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1902d864d3f16535e273f7851b92a4fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
6 . 如图,在四棱锥
中,平面
平面ABCD,
,
,点E在棱BF上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/11/c14ee36e-3f43-49c8-b43e-4ab66c5df451.png?resizew=141)
(1)求三棱锥
的体积;
(2)判断直线AE与平面DCF是否相交,如果相交,在图中画出交点H(不需要说明理由),并求出线段AH的长;如果不相交,求直线AE到平面DCF的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e5ba482836565abad208665cf7b9972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf84ed033bd035c2fe7552badd5e447d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e6ccd0fffd8d1df432d99f86f9f4678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b9fa6f4dab63cb9d63a3330a0aba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7acb013aba6d3165c7512bd8b9957040.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/11/c14ee36e-3f43-49c8-b43e-4ab66c5df451.png?resizew=141)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/488eb032fffcac002d2c1877cc27c6cf.png)
(2)判断直线AE与平面DCF是否相交,如果相交,在图中画出交点H(不需要说明理由),并求出线段AH的长;如果不相交,求直线AE到平面DCF的距离.
您最近一年使用:0次
2023-04-10更新
|
470次组卷
|
4卷引用:广西桂林市、崇左市2023届高三一模数学(文)试题
广西桂林市、崇左市2023届高三一模数学(文)试题(已下线)专题13立体几何(解答题)广西壮族自治区防城港市2023届高三下学期4月第三次联合调研数学(文)试题(已下线)广东省佛山市2024届高三教学质量检测(一)数学试题变式题17-22
解题方法
7 . 如图,四棱锥
的底面为正方形,
底面
.设平面
与平面
的交线为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/27/06e48114-1566-4cc7-bac7-12964f660fb9.png?resizew=167)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
平面
;
(2)证明:
平面
;
(3)在图中画出直线
并证明:
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/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/27/06e48114-1566-4cc7-bac7-12964f660fb9.png?resizew=167)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218054144a13435580cd132b9459546c.png)
(3)在图中画出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9df740160690029ac1e730c85f20347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218054144a13435580cd132b9459546c.png)
您最近一年使用:0次
2022高三·全国·专题练习
解题方法
8 . 如图,在三棱锥
中,
和
均是边长为4的等边三角形.
是棱
上的点,
,过
的平面
与直线
垂直,且平面
平面
.在图中画出
,写出画法并说明理由;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a94d59dee2d5a8f0425b64b2083825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f63075fdeeb9e765dd696c4ff43ba1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4fce8e923062b9779553d6f282895b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d03c95a1e2e43a0b6a9992e83b8a24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a392d05d3cfcbb438569b1ea9980dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/670684ed4962fcebce7b5a140510d066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/863dd235346ce076540230e8eb4122f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/21/e2ce5017-fd12-4a09-941a-0063ed77f8b3.png?resizew=138)
您最近一年使用:0次
解题方法
9 . 如图,在三棱锥V-ABC中,P是棱VA的中点,
平面
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/c69096e7-bdd2-4db5-b1f8-80856c3b6ab5.png?resizew=170)
(1)在图中画出
与三棱锥V-ABC表面的交线,写出画法并说明理由;
(2)若
平面ABC,
,VA=AB=BC,求
与平面VAB夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c9fe3c7e943c3beb7f4bbf345822064.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dbcbc9f69baa9978d60489a2da4bc2e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/c69096e7-bdd2-4db5-b1f8-80856c3b6ab5.png?resizew=170)
(1)在图中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c439e4e4e48b17e19e666d892216fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e3ea409281fb7e9d5865bad15f98c4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
名校
解题方法
10 . 在五面体
中,面
为平行四边形,
,且
,
为棱
的中点.
的中点为
,证明:平面
平面
;
(2)请画出过点
,
,
的平面与平面
的交线
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06772d7ccc921f77319c503c23326be2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10546e0e0d462be05cd1a6b78b727624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3c8a954ff05adb6dd5fed003f79f104.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
(2)请画出过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc46bcc6cb032ca29f32962b8aa5c9c2.png)
您最近一年使用:0次
2022-04-23更新
|
798次组卷
|
2卷引用:浙江省A9协作体2021-2022学年高一下学期期中联考数学试题