名校
解题方法
1 . 如图,在四边形
中,
,
,
,以
为折痕把
折起,使点
到达点
的位置,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/f60f964b-4c84-45e7-9fd9-3074f9299798.png?resizew=168)
(1)证明:
平面
;
(2)若
为
的中点,
,三棱锥
的表面积为
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a16dc02090b6e9263555061f14fbc8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd6a2b112facda441f4e34bf5c145fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650c6c818df102a83ce5159e3208d01a.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307d38cc7012c328f1f22aa793fe76d7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/f60f964b-4c84-45e7-9fd9-3074f9299798.png?resizew=168)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fd0feb3d579d3ce5ac7d11e97176431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a9ec3b527947cad9caa4537e0cb7e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1941565407f373b0990da4a6438e99c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d9d0e698b54e331467bf6c2842ea2ac.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,在四棱锥P—ABCD中,底面ABCD为直角梯形,AD//BC,AD⊥AB,PA⊥平面ABCD,过AD的平面与PC,PB分别交于点M,N,连接MN.
![](https://img.xkw.com/dksih/QBM/2020/6/22/2490246857129984/2490854221160448/STEM/65ed974be1084106bffc608c611bd730.png?resizew=173)
(1)证明:BC//MN;
(2)已知PA=AD=AB=2BC,平面ADMN⊥平面PBC,求
的值.
![](https://img.xkw.com/dksih/QBM/2020/6/22/2490246857129984/2490854221160448/STEM/65ed974be1084106bffc608c611bd730.png?resizew=173)
(1)证明:BC//MN;
(2)已知PA=AD=AB=2BC,平面ADMN⊥平面PBC,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7178ac06194de30f0d4fc9feb23dba.png)
您最近一年使用:0次
2020-06-23更新
|
1003次组卷
|
7卷引用:辽宁省辽河油田第二高级中学2020届高三6月模拟考试数学(文)试题
辽宁省辽河油田第二高级中学2020届高三6月模拟考试数学(文)试题2020届湖北省七市(州)教科研协作体高三下学期5月联合考试文科数学试题河南省名校联考2020-2021学年高三上学期第一次模拟考试文科数学试题(已下线)痛点11 立体几何中的组合体问题-2021年新高考数学一轮复习考点扫描(已下线)专题30 空间中直线、平面平行位置关系的证明方法-学会解题之高三数学万能解题模板【2022版】(已下线)专题34 立体几何解答题中的体积求解策略-学会解题之高三数学万能解题模板【2022版】四川省南充高级中学2021-2022学年高三上学期第三次月考数学(文)试题
解题方法
3 . 如图,已知平面四边形
中,
为
的中点,
,
,且
.将此平面四边形
沿
折起,且平面
平面
,连接
、
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/9630f830-1b4b-4060-8307-a8011da162c5.png?resizew=360)
(Ⅰ)证明:平面
平面
;
(Ⅱ)求点
与平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b027ed57b9c6f24e27ec0ae282c76efa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbb05b8b630052ff544249ebd72d95d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a98c8e36238ad90378e724466fcb6023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4654c3481f78f939c3267b42d57262d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b027ed57b9c6f24e27ec0ae282c76efa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19ad6a0124359e8b9f7649cf0bff51ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6be1de798d031b5142aff0af8ba2c3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/9630f830-1b4b-4060-8307-a8011da162c5.png?resizew=360)
(Ⅰ)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04c222223dae9ef27d4c132534d9848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(Ⅱ)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
4 . 如图,在四棱锥
中,底面四边形
是菱形,点
在线段
上,
∥平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/3fbd895c-4790-462c-ab6a-652fd652c994.png?resizew=185)
(1)证明:点
为线段
中点;
(2)已知
平面
,
,点
到平面
的距离为1,四棱锥
的体积为
,求
.
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65277734669566578cbb7d690bb200fb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/3fbd895c-4790-462c-ab6a-652fd652c994.png?resizew=185)
(1)证明:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
(2)已知
![](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/05740f0c6071846227dc0ec177ad15e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65277734669566578cbb7d690bb200fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
您最近一年使用:0次
解题方法
5 . 如图所示,平面
平面
,四边形
是边长为
的正方形,
,
分别是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/ba16686e-3e28-4904-8e45-ec160a278ed2.png?resizew=162)
(1)证明:
平面
;
(2)若
,求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.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/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9b9bb0f509e6f3d30858efb217c1f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433330447c4947540b3dc52719659681.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/ba16686e-3e28-4904-8e45-ec160a278ed2.png?resizew=162)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa6d64d90b17044cb17ff3061420c08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c745df4f226027778d5fe45b6501b822.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e12bfde565540f059dd27ea47dfaa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec53c9cc69c2e3943ec8df5d5b5d44c7.png)
您最近一年使用:0次
2020-06-09更新
|
604次组卷
|
2卷引用:辽宁省渤大附中、育明高中2020届高三第五次模拟考试数学(文)试题
6 . 已知四棱锥P﹣ABCD中,侧面PAD⊥底面ABCD,∠BAD=60°,△PAD是边长为2的正三角形,底面ABCD是菱形,点M为PC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/866195e9-96b6-44b7-bd9b-9111dd0c8760.png?resizew=170)
(1)求证:PA∥平面MDB;
(2)求三棱锥A﹣BDM的体积.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/866195e9-96b6-44b7-bd9b-9111dd0c8760.png?resizew=170)
(1)求证:PA∥平面MDB;
(2)求三棱锥A﹣BDM的体积.
您最近一年使用:0次
7 . 已知矩形
,
,E、F分别为
、
中点,点M、N分别为
的三等分点,将
沿
折起,连接
、
、
、
、
、
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/5c998a35-c68e-4340-96d0-4d69c79f97a4.png?resizew=388)
(1)求证:平面
平面
;
(2)当
时,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/526908dfb46cf151b8ab1492a9d52047.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/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce6c0e9de83f2e64ae33609fc08459d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1460aa3d83df61f6c411b34412135451.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/5c998a35-c68e-4340-96d0-4d69c79f97a4.png?resizew=388)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89780e64ac09c6d2b36d160a04ee9bd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8980beef632e12920b1e1ef81d32b4b3.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f5dc11efe60b4fd9a13b1d6b83842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3931333820859378ea6723ff3075189.png)
您最近一年使用:0次
2020-06-03更新
|
532次组卷
|
2卷引用:2020届辽宁省辽南协作校高三第二次模拟考试数学文科试题
名校
解题方法
8 . 已知矩形
,
为
中点,将
至
折起,连结
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/061639da-79c8-473b-83f9-697ba9c5e357.png?resizew=362)
(1)当
时,求证:
;
(2)当
时,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/816e687a04f5915ba15f06b00813686a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b8f0a88a36b8e44283859c0320a801.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/061639da-79c8-473b-83f9-697ba9c5e357.png?resizew=362)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f5dc11efe60b4fd9a13b1d6b83842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35333abd7f02d663d15251bc5cbbf921.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bfd9b42173ae42400b7a104e19abcd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/282d4a8c3476b2b81e3fd73898e64539.png)
您最近一年使用:0次
2020-06-03更新
|
427次组卷
|
2卷引用:2020届辽宁省辽南协作校高三第二次模拟数学理科试题
名校
解题方法
9 . 四棱锥P﹣ABCD中,AB∥CD,AB⊥BC,AB=BC=1,PA=CD=2,PA⊥底面ABCD,E在PB上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/bb11194a-b5b7-4aa7-8127-ee8c98a76eeb.png?resizew=167)
(1)证明:AC⊥PD;
(2)若PE=2BE,求三棱锥P﹣ACE的体积.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/bb11194a-b5b7-4aa7-8127-ee8c98a76eeb.png?resizew=167)
(1)证明:AC⊥PD;
(2)若PE=2BE,求三棱锥P﹣ACE的体积.
您最近一年使用:0次
2020-05-30更新
|
1981次组卷
|
6卷引用:2020届东北三省四市教研联合体高三模拟试卷(二)数学(文科)试题
名校
解题方法
10 . 已知正三棱柱
中,
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/2020/5/26/2471195940675584/2471973690851328/STEM/3bfd660a-dd5d-4418-8859-14336a1fac40.png)
(1)求证:
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92105835f8075cb75dff244e908370b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2020/5/26/2471195940675584/2471973690851328/STEM/3bfd660a-dd5d-4418-8859-14336a1fac40.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebe6a446b91e73b181f9f4d56264dd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba9e20d667d04bf3ee7f55cc795ce01.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4000c3d52d334ee24539af0244758b0f.png)
您最近一年使用:0次
2020-05-27更新
|
763次组卷
|
5卷引用:2020届辽宁省部分重点中学协作体高三高考模拟数学(文科)试题