解题方法
1 . 如图,正方体
中,
交
于点
,棱长为2.
![](https://img.xkw.com/dksih/QBM/2022/1/11/2892065143857152/2895531543248896/STEM/9e9e13b7-9725-4829-8a72-40260fcb05b2.png?resizew=176)
(1)求正方体的体积;
(2)证明:
平面
;
(3)证明:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/2022/1/11/2892065143857152/2895531543248896/STEM/9e9e13b7-9725-4829-8a72-40260fcb05b2.png?resizew=176)
(1)求正方体的体积;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1638cde11c9862af200115048a0177da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f96c673a2381f118ea2d3efc0bca1f3.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231673dd67ab79d3c5da73904ceade1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb04914c4e8fb3483da44c67fe1809f.png)
您最近一年使用:0次
解题方法
2 . 如图,在直三棱柱
中,
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/38450060-ccc3-4a6b-858f-a978f09f00ec.png?resizew=176)
(1)证明:
平面
;
(2)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/38450060-ccc3-4a6b-858f-a978f09f00ec.png?resizew=176)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aff368051d372bc2394f3a95a0c4ebca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9c33c356781f0f691d082ee8a32204.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebec2db41b72a1cc8035b640ccd3dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565436bbe5ba67ef7d2a12f8b93c4798.png)
您最近一年使用:0次
名校
3 . 如图,四棱锥
的底面是平行四边形,
平面
,
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/2022/1/10/2891562771308544/2895523433283584/STEM/c5189e5c-993a-406b-8de2-7ff5fbbf414f.png?resizew=236)
(1)证明:
平面
;
(2)若
,求直线
与平面
所成角的大小.
![](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/650c6c818df102a83ce5159e3208d01a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/2022/1/10/2891562771308544/2895523433283584/STEM/c5189e5c-993a-406b-8de2-7ff5fbbf414f.png?resizew=236)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2597b5554284e275367c25529c6750f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d461ce5b555610d67036987f76f9f3b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
您最近一年使用:0次
2022-01-16更新
|
692次组卷
|
3卷引用:云南省昆明市2022届高三“三诊一模”市统测数学(理)试题
云南省昆明市2022届高三“三诊一模”市统测数学(理)试题(已下线)易错点14 立体几何中的角-备战2022年高考数学考试易错题(全国通用)江西省宜春市宜丰县宜丰中学2023-2024学年高二上学期10月月考数学试题
名校
解题方法
4 . 如图,已知直三棱柱
中,侧面
为正方形,
,
,
,
分别为
,
,
的中点,
,
为线段
上一动点.
![](https://img.xkw.com/dksih/QBM/2022/3/21/2941121866326016/2942272077185024/STEM/e1907dfa6b0e464db23eacebdaa7f15f.png?resizew=132)
(1)证明:
;
(2)求几何体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a9ad711b25c36dae0c2a2cedff9954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1859959fdb4c5edd8056893f94a10a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df9b66915361b2a49866fcdf485b5fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/2022/3/21/2941121866326016/2942272077185024/STEM/e1907dfa6b0e464db23eacebdaa7f15f.png?resizew=132)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba8b1a2760333f3d6f6d456881115498.png)
(2)求几何体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd56a91e2028483ad3da2cf281a6a12b.png)
您最近一年使用:0次
2022-03-23更新
|
700次组卷
|
3卷引用:云南省2022届高三“3+3+3”高考备考诊断性联考(二)数学(文)试题
名校
解题方法
5 . 如图,直四棱柱
的底面是菱形,E,F分别是
上的点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/5ca20417-0a32-4c06-9d65-8e903ddabc6d.png?resizew=160)
(1)证明:点F在平面
内;
(2)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ae1236ba2dca7bc34a87533a22e90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23bce37d28bda566bffbc0b7506160d3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/5ca20417-0a32-4c06-9d65-8e903ddabc6d.png?resizew=160)
(1)证明:点F在平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2331bccb6ebf5b9fd639df994f575a9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c47d03028c31e772cc4720c41248e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aca184f73f1bc6fb5191566728a51a8.png)
您最近一年使用:0次
名校
解题方法
6 . 如图,在直三棱柱
中,
分别是
的中点,F是棱
上的点,满足
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/2022/1/17/2896532210073600/2926872497266688/STEM/2511dcfd-a9da-46a0-965d-a44046353f48.png?resizew=128)
(1)证明:
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/49ee8a1224b865c6ebc8d68421179ead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db4b683d829f71b8c5c4b16cb9f7710a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21204d1c00149a21f59c004f6b927237.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ecad355286188fd317939fa50f9555.png)
![](https://img.xkw.com/dksih/QBM/2022/1/17/2896532210073600/2926872497266688/STEM/2511dcfd-a9da-46a0-965d-a44046353f48.png?resizew=128)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98dbbf1a30ea54a46b903a9645debab4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8964550c7fc31d982b1534e884ad6f52.png)
您最近一年使用:0次
2022-03-01更新
|
607次组卷
|
3卷引用:云南省师范大学附属中学2022届高三高考适应性月考卷(七)数学(文)试题
7 . 如图,在三棱锥
中,
是边长为
的等边三角形,
,
是
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/992c15c1-80ce-4acf-94e3-eb58f150c546.png?resizew=144)
(1)证明:平面
平面
;
(2)若
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c6ab3845dca5d2bc00e4390fae02032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21be01a95cdd3149512bf95d6084fdd6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/992c15c1-80ce-4acf-94e3-eb58f150c546.png?resizew=144)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e32a859e1616f7a7e4202d58d030794.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
您最近一年使用:0次
20-21高三·全国·开学考试
名校
解题方法
8 . 如图,在四棱锥B﹣ACDE中,正方形ACDE所在的平面与正三角形ABC所在的平面垂直,点M,N分别为BC,AE的中点,点F在棱CD上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/3be8abc1-fe44-4afc-9578-78ba19147ab7.png?resizew=153)
(1)证明:MN∥平面BDE;
(2)若AB=2,点M到AF的距离为
,求CF的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/3be8abc1-fe44-4afc-9578-78ba19147ab7.png?resizew=153)
(1)证明:MN∥平面BDE;
(2)若AB=2,点M到AF的距离为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7258cbc35df82eb43ee42a739caaee17.png)
您最近一年使用:0次
2021-08-28更新
|
358次组卷
|
3卷引用:云南省昆明市五华区昆一中学贯中学2022届高三3月月考数学(文)试题
名校
9 . 如图,四棱锥
的底面
是平行四边形,
底面
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98e624e6ee68b796f70f9d35e78a8aed.png)
(2)若E是棱PC的中点,求直线AD与平面PCD所成的角
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e383629efd98f87ef95e1121fd8847c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98e624e6ee68b796f70f9d35e78a8aed.png)
(2)若E是棱PC的中点,求直线AD与平面PCD所成的角
您最近一年使用:0次
2021-11-08更新
|
1427次组卷
|
10卷引用:云南省昆明市嵩明县2021-2022学年高一下学期期中考试数学试题
云南省昆明市嵩明县2021-2022学年高一下学期期中考试数学试题(已下线)8.6 空间直线、平面的垂直(精练)-2021-2022学年高一数学一隅三反系列(人教A版2019必修第二册)广东省清远市重点中学2021-2022学年高一下学期期中数学试题(已下线)8.6.2直线与平面垂直(第1课时)(练案)-2021-2022学年高一数学同步备课 (人教A版2019 必修第二册)广西南宁市宾阳中学2021-2022学年高一下学期期末考试数学试题安徽省滁州市定远县民族中学2021-2022学年高二下学期期末数学试题(已下线)高二上学期期中【常考60题考点专练】(选修一全部内容)-2022-2023学年高二数学考试满分全攻略(人教A版2019选修第一册)黑龙江省鸡西实验中学2020-2021学年高一下学期期中考试数学试题第13课时 课前 直线与平面垂直的性质广东省韶关市韶实、榕城、清实、新河、龙实五校2023-2024学年高一下学期5月联考数学试题
10 . 如图,
是正方形,
是正方形的中心,
平面
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/2021/9/2/2799328293199872/2801738297671680/STEM/01597aec-cfea-4986-97ab-f9f8d4a2af26.png?resizew=256)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
平面
;
(2)求证:平面
⊥平面
;
(3)若
,
的面积为
,求点
到平面
的距离(用
表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.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://img.xkw.com/dksih/QBM/2021/9/2/2799328293199872/2801738297671680/STEM/01597aec-cfea-4986-97ab-f9f8d4a2af26.png?resizew=256)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2de8c4deab76210706f9e341ef05b72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
2021-09-05更新
|
231次组卷
|
3卷引用:云南省曲靖市罗平县第五中学2021-2022学年高二上学期期末考试数学试题