如图,在直三棱柱ABC-A1B1C1中,D为棱BC上一点.
![](https://img.xkw.com/dksih/QBM/2016/5/20/1572643402964992/1572643408707584/STEM/3cb5d56911ad45a8892aab067ac17bb0.png?resizew=182)
(1)若AB=AC,D为棱BC的中点,求证:平面ADC1⊥平面BCC1B1;
(2)若A1B∥平面ADC1,求
的值.
![](https://img.xkw.com/dksih/QBM/2016/5/20/1572643402964992/1572643408707584/STEM/3cb5d56911ad45a8892aab067ac17bb0.png?resizew=182)
(1)若AB=AC,D为棱BC的中点,求证:平面ADC1⊥平面BCC1B1;
(2)若A1B∥平面ADC1,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/501dc6babe43bd4d7e669b5dcea40945.png)
2016·江苏南京·三模 查看更多[4]
2016届江苏省南京市高三第三次模拟考试数学试卷江苏省南通中学2018届高三10月月考数学试题(已下线)专题07 空间几何体的平行于垂直-《巅峰冲刺2020年高考之二轮专项提升》(江苏)福建省福州市八县(市)协作校2021-2022学年高一下学期期末联考数学试题
更新时间:2016-12-04 07:34:07
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【推荐1】如图,PDCE为矩形,ABCD为梯形,平面PDCE⊥平面ABCD,∠BAD=∠ADC=90°,AB=AD=
CD=1,PD=
.
![](https://img.xkw.com/dksih/QBM/2014/7/8/1571816802746368/1571816808677376/STEM/ff8eaccef82a491a9655c177f2410bbd.png)
(1)若M为PA中点,求证:AC∥平面MDE;
(2)求直线PA与平面PBC所成角的正弦值;
(3)在线段PC上是否存在一点Q(除去端点),使得平面QAD与平面PBC所成锐二面角的大小为
?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/2014/7/8/1571816802746368/1571816808677376/STEM/ff8eaccef82a491a9655c177f2410bbd.png)
(1)若M为PA中点,求证:AC∥平面MDE;
(2)求直线PA与平面PBC所成角的正弦值;
(3)在线段PC上是否存在一点Q(除去端点),使得平面QAD与平面PBC所成锐二面角的大小为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecdab625e32e38d1c72c901cece0e147.png)
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【推荐2】如图1,已知三棱锥
,图2是其平面展开图,四边形
为正方形,
和
均为正三角形,
,
分别为
,
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/2/650f264e-f75f-4f05-9ad1-f72e6e827293.png?resizew=488)
(1)求证:
;
(2)求二面角
的余弦值;
(3)若点
在棱
上,满足
,
,点
在棱
上,且
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6830ebecddbd9759be626289c408e4f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/2/650f264e-f75f-4f05-9ad1-f72e6e827293.png?resizew=488)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c545dcccb34fd8f83bfb23f2d1c23b.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74ec3d90e5f12cd8946d4dc638c1a357.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f095541d8ac2d972743d3200f22e30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f297d79758d8803193db804f99b8909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
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【推荐1】如图,在三棱柱
中,侧面
是矩形,平面
平面
,
是棱
的中点.
,
.
![](https://img.xkw.com/dksih/QBM/2020/8/2/2519321075630080/2520053761605632/STEM/df64e61d80d547f19d84fb0a5c9f8b04.png?resizew=292)
(1)求证:
;
(2)若
是
的中点,求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61cdaadeae37736a1e6dd93fa1fe712f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b604db8b931f31b41273cdebee2ef119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93375ca41cdaac319b79f05108f7fc24.png)
![](https://img.xkw.com/dksih/QBM/2020/8/2/2519321075630080/2520053761605632/STEM/df64e61d80d547f19d84fb0a5c9f8b04.png?resizew=292)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37466666ac10bbcdfddb16030dd8e1e3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa6d64d90b17044cb17ff3061420c08.png)
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【推荐2】如图,多面体
中,四边形
是
为钝角的平行四边形,四边形
为直角梯形,
且
.
![](https://img.xkw.com/dksih/QBM/2020/3/17/2421472583974912/2423087480389632/STEM/b6fa7c1d-d57f-4107-b897-d10f66f9b58e.png?resizew=230)
(1)求证:
;
(2)若点
到平面
的距离为
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89e9785a8ffb637c91757fe01d3c23a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c64b9a52dac337cc954831acb61107d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a72a2b6df0bbc99cc6fd81ddf9b78e9e.png)
![](https://img.xkw.com/dksih/QBM/2020/3/17/2421472583974912/2423087480389632/STEM/b6fa7c1d-d57f-4107-b897-d10f66f9b58e.png?resizew=230)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589ddae20626f9aaac616d2a3b5d95bd.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/422210c777ac0d625bbd81cc7601bf9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
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