1 . 如图,
是底面边长为1的正三棱锥,
分别为棱
上的点,截面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
底面
,且棱台
与棱锥
的棱长和相等.(棱长和是指多面体中所有棱的长度之和)
为正四面体;
(2)若
,求二面角
的大小;
(3)设棱台
的体积为
,是否存在体积为
且各棱长均相等的直四棱柱,使得它与棱台
有相同的棱长和? 若存在,请具体构造出这样的一个直四棱柱,并给出证明;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927456b0989846a2f1573844bbaa2105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19bb1063e139610045f3bca5ca0b2766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8783bc74553bf44b61d999a0e4144bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7fcbd32d874c0095b0c993efdc1e7c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab6d47edbcc2ae6efcfd7f28e401e3e9.png)
(3)设棱台
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8783bc74553bf44b61d999a0e4144bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8783bc74553bf44b61d999a0e4144bb.png)
您最近一年使用:0次
2022-11-17更新
|
135次组卷
|
15卷引用:2004年普通高等学校招生考试数学(文)试题(上海卷)
2004年普通高等学校招生考试数学(文)试题(上海卷)2004年普通高等学校招生考试数学(理)试题(上海卷)上海市奉贤区奉城高级中学2021-2022学年高二上学期12月月考数学试题上海市金山区2021-2022学年高二上学期期末数学试题上海市嘉定区第二中学2021-2022学年高一下学期期末自查数学试题第11章 简单几何体(B卷·能力提升练)-【单元测试】2022-2023学年高二数学分层训练AB卷(沪教版2020必修第三册)(已下线)专题15 立体几何(练习)-2上海市徐汇中学2022-2023学年高二上学期期中数学试题(已下线)阶段测试(沪教版2020必修三全部内容)-2022-2023学年高二数学考试满分全攻略(沪教版2020必修三)(已下线)11.3 多面体与旋转体(作业)(夯实基础+能力提升)-【教材配套课件+作业】2022-2023学年高二数学精品教学课件(沪教版2020必修第三册)(已下线)11.2锥体(作业)(夯实基础+能力提升)-【教材配套课件+作业】2022-2023学年高二数学精品教学课件(沪教版2020必修第三册)上海市金山区上海师范大学第二附属中学2023-2024学年高二上学期期中数学试题上海市宝山区上海师大附属罗店中学2023-2024学年高二上学期第二次诊断调研数学试题(已下线)第五章 破解立体几何开放探究问题 专题二 立体几何开放题的解法 微点1 立体几何开放题的解法(一)【培优版】(已下线)安徽省安庆市2023-2024学年高二上学期期末考试数学试题
真题
解题方法
2 . 如图,正三棱柱
中,D是
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/87c1c019-44ab-4263-b2c5-1d83a56b5592.png?resizew=134)
(1)求证:直线
;
(2)求点D到平面
的距离;
(3)判断
与平面
的位置关系,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42e97eee705d164e6ac6de9ecd6d1f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/87c1c019-44ab-4263-b2c5-1d83a56b5592.png?resizew=134)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06769ce64b9bc0a23ead087fc7f8c55e.png)
(2)求点D到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c2e84d6e368f8368f8301c4cd66d6dd.png)
(3)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba9e20d667d04bf3ee7f55cc795ce01.png)
您最近一年使用:0次
真题
3 . 如图,已知
是圆O的直径,
是弦,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4af81b12fed3007d83005f31a5880fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95cc39bd5f811ee710c8a9fb73d57791.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5089cb7e01095bf4e7ab0d2dc032ab3a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/ef954a5f-d7db-49d1-9920-e1daa3065af8.png?resizew=115)
您最近一年使用:0次
真题
解题方法
4 . 如图,在底面为平行四边形的四棱锥
中,
平面
,且
,点E是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/74f8becb-a450-4dc8-b5df-d1fe384967c6.png?resizew=173)
(1)求证:
;
(2)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
平面
;
(3)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42cd3a6f03f708e9dddcd23633fedc10.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/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/74f8becb-a450-4dc8-b5df-d1fe384967c6.png?resizew=173)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbd7c2767c106faf27d6a97ebc8e739.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e2da608b66c9aee03e2503388ba4fd.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5617a404c5a3356753136e5a6b6d51e5.png)
您最近一年使用:0次
真题
解题方法
5 . 如图,正三棱柱
的所有棱长都为2,D为
中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/eeb4fea3-ab1d-4851-adb2-32e835e3412f.png?resizew=192)
(1)求证:
平面
;
(2)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/eeb4fea3-ab1d-4851-adb2-32e835e3412f.png?resizew=192)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4560fa4ad459b58b723c74bd24e51ebf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddac7861f371a927cffab205a1487d09.png)
您最近一年使用:0次
2022-11-10更新
|
1462次组卷
|
2卷引用:2007年普通高等学校招生考试数学(文)试题(福建卷)
真题
解题方法
6 . 如图,在四棱锥
中,底面为直角梯形,
,
底面
,且
分别为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/517cfa72-c952-43e0-bd34-1e4ac98a7cd9.png?resizew=156)
(1)求证:
;
(2)求
与平面
所成的角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4465d6a588e4d4eb3d93b153ec6fb81a.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/5857b03445433bfe181ea446ecc4b51b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829a1a887ceba13dd8551b1e3604bf6f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/517cfa72-c952-43e0-bd34-1e4ac98a7cd9.png?resizew=156)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/962515007ca98ad2d36557b60a42ad6f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a406f24b5131eb7da9127750319e52.png)
您最近一年使用:0次
真题
7 . 如图,
为椭圆的两个顶点,
为椭圆的两个焦点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/81b84268-931b-499e-914d-cc9003bd1086.png?resizew=397)
(1)写出椭圆的方程及准线方程;
(2)过线段
上异于O,A的任一点K作
的垂线,交椭圆于P,
两点,直线
与
交于点M.求证:点M在双曲线
上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32622697953ab5e4b4e35cd62d1b1c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/81b84268-931b-499e-914d-cc9003bd1086.png?resizew=397)
(1)写出椭圆的方程及准线方程;
(2)过线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0ff310aabd2282b539537ebed3f788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aba947934b05caae8b0c1fb1a522a0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6d49e09b17b19d7c787e95bcf1e9731.png)
您最近一年使用:0次
真题
8 . 如图,在正三棱柱
中,
,截面
侧面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/14/c9db7c7d-0e87-4461-a61b-86ec35c82a30.png?resizew=158)
(1)求证:
;
(2)若
,求平面
与平面
所成二面角(锐角)的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81bc54b075c7df963ebea664d87ddbb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0532c912a8b7953d35c6aac416478325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/14/c9db7c7d-0e87-4461-a61b-86ec35c82a30.png?resizew=158)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069e85ead1ed76069c22086b65632d3e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4afa61e0bcb124aec52ad0cc84fd94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f233b375753611ffa7a93c2c12ef5e28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
您最近一年使用:0次
真题
9 . 如图,
是半圆的直径,C是半圆上一点,直线
切半圆于C点,
于M点,
于N点,
于D点,求证:
![](https://img.xkw.com/dksih/QBM/2022/11/7/3104404081582080/3104536535138304/STEM/058ce820ee2d4e4c9ba67c55dd4a421b.png?resizew=239)
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f721340387f17c4331a5f07a97f7025a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d85c6b63bef0f632fee2e7e438a4b5cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://img.xkw.com/dksih/QBM/2022/11/7/3104404081582080/3104536535138304/STEM/058ce820ee2d4e4c9ba67c55dd4a421b.png?resizew=239)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8155e37f60e5f3de83dd6419b520debc.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6676a2ed8d7c6ca3c5b2f54e468cc0.png)
您最近一年使用:0次
真题
解题方法
10 . 在三棱锥
中,如图,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/3d2d1f56-ba32-4cca-b284-c5b57224c9fb.png?resizew=156)
(1)证明:
;
(2)求侧面
与底面
所成的二面角大小;
(3)求三棱锥的体积
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50864290147d7c808d69d83cb0f5e8d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc4f3da376bd01ef33579e6eecc6f047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdbb2f373c4ca5c4e7cf1a356392b03b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/3d2d1f56-ba32-4cca-b284-c5b57224c9fb.png?resizew=156)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8337d3e8670a9ed0165ac853b80af3d9.png)
(2)求侧面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21665d21bbfb04410c78345de1fd15ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(3)求三棱锥的体积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b04a4591698f4f2a472f7ed6088674.png)
您最近一年使用:0次
2022-11-09更新
|
519次组卷
|
3卷引用:2002年普通高等学校春季招生考试数学(文)试题(北京卷)