名校
解题方法
1 . 如图,已知
是圆
的直径,
平面
,
是
的中点,
.
平面
;
(2)求证:平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1afe4a56c1bd9fbe4850410e4133bd24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c372d059202ec388960b125d4a87dc84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89b1e86a4f4bd9250b5b0a752b838779.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2 . 在平面四边形
中(如图1),
,
,
,E是AB中点,现将△ADE沿DE翻折得到四棱锥
(如图2),
平面
;
(2)图2中,若F是
中点,试探究在平面
内是否存在无数多个点
,都有直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfaca9396f85c0137b534903321fcbe.png)
平面
,若存在,请证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddbb52f9b226b1db3f6f9f055948bd38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995f8d5c1e57b541c10f7c29645add31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5164a3cc47e266446d49127e2ef10c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec43f7352b3a8c194b4c37485fb4ffd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee4a6b8ef3e79b4482388c3391d8b18.png)
(2)图2中,若F是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a9b32570d553161be04d13954e92a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfaca9396f85c0137b534903321fcbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa3254460ecbacecb3e57c5dce227f4.png)
您最近一年使用:0次
名校
解题方法
3 . 如图①所示,已知正三角形
与正方形
,将
沿
翻折至
所在的位置,连接
,
,得到如图②所示的四棱锥.已知
,
,
为
上一点,且满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/21/0d855ffa-0ab1-4d06-900f-8e584e0b373d.png?resizew=259)
(1)求证:
平面
;
(2)在线段
上是否存在一点
,使得
平面
.若存在,指出点
的位置,并证明你的结论;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e106f4233be16e98f2c1bf9f1635622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da7bcea5a45eeae211f5851f12a7517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3736237f7bc84fc30f0bd75d5bba9242.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad895b1c422b40c35be89c8bef22e834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2c39a3d57d2de07a21550fe138ff77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6117f4a30d930911d33698444e8527f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58bd11c1ac25b222f9613428412090a7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/21/0d855ffa-0ab1-4d06-900f-8e584e0b373d.png?resizew=259)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99eef01d240d3674e0113d1064569bce.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc063cdcf722f07a1aa57be04edd416d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d987bcf7114c002843702100444da017.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea3cebae1762106ecd2a4fd56d07763.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
2023-04-19更新
|
571次组卷
|
4卷引用:立体几何专题:立体几何探索性问题的8种考法
(已下线)立体几何专题:立体几何探索性问题的8种考法浙江省宁波市北仑中学2022-2023学年高一下学期期中数学试题(已下线)13.2 基本图形位置关系(分层练习)黑龙江省齐齐哈尔市第八中学校2022-2023学年高一下学期期末数学试题
名校
解题方法
4 . 如图甲,在四边形
中,
,
.现将
沿
折起得图乙,点
是
的中点,点
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/63433e15-0b83-4656-8241-ba9e8490f2d2.png?resizew=448)
(1)求证:
平面
;
(2)在图乙中,过直线
作一平面,与平面
平行,且分别交
、
于点
、
,注明
、
的位置,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4864c21e9664fa9111ede6425b09563a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3185a8075eea774ea1c6298fd1d0f5af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8641c4dfb34a79b77598e4e4f904537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.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/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/63433e15-0b83-4656-8241-ba9e8490f2d2.png?resizew=448)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)在图乙中,过直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
您最近一年使用:0次
名校
解题方法
5 . 几何体
是四棱锥,
为正三角形,
,
,
为线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/c4f92b87-66db-461f-886d-891d1f5c9957.png?resizew=144)
(1)求证:
平面
;
(2)线段
上是否存在一点
,使得
四点共面?若存在,请找出点
,并证明;若不存在,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ad8d16722f5b9e7fd2602f14d5ffbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b0382c28547d3834ca71f3f0677695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/c4f92b87-66db-461f-886d-891d1f5c9957.png?resizew=144)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba8f7af0e091e082100c3cd7f8c487f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a814b70236a108be5d6e7ff271fe92.png)
(2)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9635120b0064caffba6d42091833d069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次
2022-11-03更新
|
974次组卷
|
4卷引用:四川省峨眉第二中学校2022-2023学年高二上学期10月月考理科数学试题
四川省峨眉第二中学校2022-2023学年高二上学期10月月考理科数学试题黑龙江省哈尔滨市宾县第二中学2022-2023学年高三上学期期中考试数学试题(已下线)8.5.3平面与平面平行(精练)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)(已下线)第26讲 空间直线、平面的平行的判定4种常见方法
名校
解题方法
6 . 如图,在四棱锥
中,底面
是矩形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/fdb48697-d46f-452c-85a1-a75595d32731.png?resizew=199)
(1)设
为
上靠近
的三等分点,
为
上靠近
的三等分点.求证:
平面
.
(2)设
是
上靠近点
的一个三等分点,试问:在
上是否存在一点
,使
平面
成立?若存在,请予以证明;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a5faf3cbb633fc4294c8ce703c64c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/fdb48697-d46f-452c-85a1-a75595d32731.png?resizew=199)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3201d3796ed9a29338aac25245a7c8e2.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8ccd4181f956f6e0140bf0ab8f0716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
您最近一年使用:0次
2021-05-08更新
|
2326次组卷
|
4卷引用:吉林省东北师大附属中学2020-2021学年高一下学期期中考试数学试题
吉林省东北师大附属中学2020-2021学年高一下学期期中考试数学试题(已下线)专题23 立体几何中平行的存在性问题-【重难点突破】2021-2022学年高一数学常考题专练(人教A版2019必修第二册)(已下线)第03讲 空间直线、平面的平行 (高频考点—精练)江苏省连云港市赣榆第一中学2020-2021学年高一下学期第二次月考数学试题
名校
7 . 如图,在矩形ABCD和矩形ABEF中,
,
,矩形ABEF可沿AB任意翻折.
![](https://img.xkw.com/dksih/QBM/2020/1/30/2388354048933888/2389111775379456/STEM/6a2facb046bc42008ce9a5231af6ca75.png?resizew=123)
(1)求证:当点F,A,D不共线时,线段MN总平行于平面ADF.
(2)“不管怎样翻折矩形ABEF,线段MN总与线段FD平行”这个结论正确吗?如果正确,请证明;如果不正确,请说明能否改变个别已知条件使上述结论成立,并给出理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22437a2a3402609bfd4054a9f2b6c685.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ff398bdaa4eb5a274f86c0d8b77ef2.png)
![](https://img.xkw.com/dksih/QBM/2020/1/30/2388354048933888/2389111775379456/STEM/6a2facb046bc42008ce9a5231af6ca75.png?resizew=123)
(1)求证:当点F,A,D不共线时,线段MN总平行于平面ADF.
(2)“不管怎样翻折矩形ABEF,线段MN总与线段FD平行”这个结论正确吗?如果正确,请证明;如果不正确,请说明能否改变个别已知条件使上述结论成立,并给出理由.
您最近一年使用:0次
2020-01-31更新
|
1073次组卷
|
9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 11.3.3 平面与平面平行
人教B版(2019) 必修第四册 逆袭之路 第十一章 立体几何初步 11.3.3 平面与平面平行人教A版(2019) 必修第二册 逆袭之路 第八章 8.5 空间直线、平面的平行 8.5.3 平面与平面平行人教B版(2019) 必修第四册 过关斩将 第十一章 立体几何初步 11.3.3 平面与平面平行(已下线)【新教材精创】11.3.2直线与平面平行(第2课时)练习(1)云南省昆明市第八中学2020-2021学年高一下学期期中考试数学试题(已下线)8.5空间直线、平面的平行C卷苏教版(2019) 必修第二册 过关斩将 第13章 13.2 综合拔高练(已下线)专题8.10 空间直线、平面的平行(重难点题型检测)-2022-2023学年高一数学举一反三系列(人教A版2019必修第二册)新疆维吾尔自治区乌鲁木齐市米东区乌鲁木齐市第101中学2023届高三上学期1月月考数学试题
名校
解题方法
8 . 在四棱锥
中,底面是平行四边形,
在
上,且
.
为
中点,求证:
平面
;
(2)侧棱
上是否存在一点
,使得
平面
.若存在,求
的值;若不存在,试说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd9d033f15598a1b498b0a4ea21fbd20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/defa5b53043ae802bb1af7d14374406d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b165d3a4c4aa784e0d66cadaff8f64e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9428c4a6a25d360a036aaf0a92e40988.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
(2)侧棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b2ba2a78454b3c560ca893d694a227.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a07f232da44a98f260357e304b51ca1.png)
您最近一年使用:0次
名校
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9 . 已知四棱锥
,底面
为矩形,
,
,
分别是
,
,
的中点.证明:
平面
;
(2)
平面
.
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de22059d7d80f24817235269e9bb1ffe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12d8677ae5ca7acf874d93789425d172.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
您最近一年使用:0次
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解题方法
10 . 正方体
中,
,
分别是
,
的中点.
与
所成角;
(2)求证:
平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2024-05-08更新
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3353次组卷
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