1 . 已知平面
平面
,m,n是异面直线,
,
,
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f48501293ad8b35cbf27edb498a3da2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15d0311b76ee89c51bde6f4c09dd52df.png)
求证(1)
; (2) ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49cc1ed828a703622287cd28180d7986.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a60be170a52db82cf37b30db0cde26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/511110951e4e9a3a5dc4fc07461e617f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d1639e0e787ca503a97a5ad19de6164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62300c801cb3deb0233cb79edf5b507f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209323a7a4d015f7e570ec578c1731f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f48501293ad8b35cbf27edb498a3da2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15d0311b76ee89c51bde6f4c09dd52df.png)
求证(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/808c6d37467a5c995d71e49408503927.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49cc1ed828a703622287cd28180d7986.png)
![](https://img.xkw.com/dksih/QBM/2017/11/29/1827666621079552/1829003038040064/STEM/6e3d858a9a464e339e4dadb9db06b460.png?resizew=191)
您最近一年使用:0次
2017-11-30更新
|
186次组卷
|
2卷引用:江苏省如皋市2017~2018学年度高二年级第一学期教学质量调硏(二)理科试题
2 . 如图,在三棱柱ABCA1B1C1中, CC1⊥平面ABC, AC⊥BC, AB1的中点为D,B1C∩BC1=E. 求证:
![](https://img.xkw.com/dksih/QBM/2017/5/16/1688114278875136/1721312018112512/STEM/5de095aa826640ca8adc94365b61ca68.png?resizew=169)
![](https://img.xkw.com/dksih/QBM/2017/5/16/1688114278875136/1721312018112512/STEM/5de095aa826640ca8adc94365b61ca68.png?resizew=169)
(1)DE∥平面AA1C1C;
(2)AC⊥平面BCC1B1.
您最近一年使用:0次
名校
3 . 判断下列多组点中,三点是否共线,并说明理由.
(1)(1,4),(-1,2),(3,5)
(2)(-2,-5),(7,6),(-5,3)
(3)(1,0),(0,-
),(7,2)
(4)(0,0),(2,4),(-1,3)
(1)(1,4),(-1,2),(3,5)
(2)(-2,-5),(7,6),(-5,3)
(3)(1,0),(0,-
![](https://img.xkw.com/dksih/QBM/2017/2/20/1633778794356736/1715158573875200/STEM/d46bfb234c0a497999f5d923f8aac0ac.png?resizew=15)
(4)(0,0),(2,4),(-1,3)
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名校
4 . 在正方体ABCD-A1B1C1D1中,E、F分别是CD、A1D1中点.
![](https://img.xkw.com/dksih/QBM/2017/11/15/1817595502911488/1817931638169600/STEM/3bf7a5524dee4664b575ab6a0fe0eb7f.png?resizew=145)
(1)求证:AB1⊥BF;
(2)若正方体的棱长为1,求
![](https://img.xkw.com/dksih/QBM/2017/11/15/1817595502911488/1817931638169600/STEM/3bf7a5524dee4664b575ab6a0fe0eb7f.png?resizew=145)
(1)求证:AB1⊥BF;
(2)若正方体的棱长为1,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d70408b58aedc71b41132a570c0ac7e.png)
您最近一年使用:0次
5 . 如图,
、
分别为直角三角形
的直角边
和斜边
的中点,沿
将
折起到
的位置,连结
、
,
为
的中点.
![](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/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f201a40fedca4ad14db193f4db2127e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13d739f8865c547614105533cd168f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9806df6df27bf715c81c4a93fc6517c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1b2210b77b2cf71d12fac1cbb6394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1b2210b77b2cf71d12fac1cbb6394.png)
(1)求证:平面
;(2)求证:平面
平面
;
(3)求证:平面
.
![](https://img.xkw.com/dksih/QBM/2017/10/23/1801684862427136/1802445136977920/STEM/80c7da93b8df4eb1b4b9ad7a0055570f.png?resizew=282)
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6 . 已知点
是直线
上的一个动点,定点
,
是线段
延长线上的一点,且
,求点
的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d4cb0990b93c9900bab2784bef4b10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f0455401e60c9b0746cc08631d6cb3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66a958140160f2125d3e20b225752d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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13-14高三上·江苏盐城·阶段练习
名校
解题方法
7 . 如图长方体
中,底面
是正方形,
是
的中点,
是棱
上任意一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/13/6f5798b9-2fcb-49d6-9da1-df593f980085.png?resizew=162)
⑴求证:
;
⑵如果
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fdae2749f537f9308d067c1fec19d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/13/6f5798b9-2fcb-49d6-9da1-df593f980085.png?resizew=162)
⑴求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7788f70d6ada894a892fc4f2474ef27.png)
⑵如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df109566d082b8fc65e44f5db40852c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
您最近一年使用:0次
2016-12-02更新
|
859次组卷
|
7卷引用:江苏省如皋市搬经中学2016-2017学年高一下学期必修二综合练习数学试题
8 . 如图几何体中,矩形
所在平面与梯形
所在平面垂直,且
,
,
,
为
的中点.
(1)证明:
平面
;
(2)证明:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9186e4574ffe28e673724fcb019db208.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/936c74c9a7edc81c037f4ea795d130bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95a078495ba47076ccaa28b46f765d80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93380ab8eccc6e6f11bdf19ffc2d4cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd0285afe567ca0b32f0ccafc30167cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9186e4574ffe28e673724fcb019db208.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5928c98b341b16d4b5a5b931d2929d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9186e4574ffe28e673724fcb019db208.png)
![](https://img.xkw.com/dksih/QBM/2017/11/6/1811431649705984/1813487454814208/STEM/a6872f8763da49bb9ded668c3bfd71b0.png?resizew=232)
您最近一年使用:0次
2016-09-27更新
|
745次组卷
|
3卷引用:江苏省太仓市明德高级中学2017-2018学年高二上期中复习(立体几何)数学试题
解题方法
9 . 如图,在四面体
中,
,
,点
,
分别为棱
,
上的点,点
为棱
的中点,且平面
平面
.求证:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/6/52c5b6d4-e2c6-4a19-a72f-e92d7539455a.png?resizew=175)
(1)
;
(2)平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff29971ccc633d89832ffa9bd54afa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af260e0d98c95d1e092dc4c6d348e3ea.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de26c3f532386379ef028cd4e59d12a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/6/52c5b6d4-e2c6-4a19-a72f-e92d7539455a.png?resizew=175)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ee170c82e3dc624dc3016443496a469.png)
(2)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7cfcf3b8cd4f355003350a9d45a1619.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次