名校
1 . 如图,将四边形
中,
沿着
翻折到
,则翻折过程中线段
中点
的轨迹是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/e65aa539-4596-4f4d-b1ba-1fd7acafd2cc.png?resizew=186)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57132b0bd38c035fec010ee3be1bc8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/e65aa539-4596-4f4d-b1ba-1fd7acafd2cc.png?resizew=186)
A.椭圆的一段 | B.抛物线的一段 |
C.双曲线的一段 | D.一段圆弧 |
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2021-08-23更新
|
919次组卷
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4卷引用:浙江省温州中学2020-2021学年高三上学期11月月考数学试题
浙江省温州中学2020-2021学年高三上学期11月月考数学试题上海市建平中学2023届高三三模数学试题(已下线)考点14 立体几何中的动态问题 2024届高考数学考点总动员【讲】(已下线)第三章 空间轨迹问题 专题五 微点1 翻折、旋转问题中的轨迹问题【培优版】
2 . 如图,在三棱锥
中,
,平面
平面ABC,D为PC中点,则异面直线BD与PA所成的角为( )
![](https://img.xkw.com/dksih/QBM/2021/6/10/2745595442479104/2789451910422528/STEM/a8777ecb96e94290afcd800e65729a72.png?resizew=166)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aaece383abb6984478afe95f733d3bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://img.xkw.com/dksih/QBM/2021/6/10/2745595442479104/2789451910422528/STEM/a8777ecb96e94290afcd800e65729a72.png?resizew=166)
A.30° | B.45° | C.60° | D.90° |
您最近一年使用:0次
名校
解题方法
3 . 在正方体ABCDA1B1C1D1中,点P是线段BC1上任意一点,则下列结论中正确的是( )
A.AD1⊥DP | B.AP⊥B1C |
C.AC1⊥DP | D.A1P⊥B1C |
您最近一年使用:0次
2022-05-07更新
|
453次组卷
|
4卷引用:【全国百强校】重庆市第八中学2018届高考适应性月考(八)数学(文)试题
【全国百强校】重庆市第八中学2018届高考适应性月考(八)数学(文)试题(已下线)8.6.2空间直线、平面的垂直(2)(课后作业)【师说智慧课堂】新教材人教A(2019)必修(第二册)(已下线)专题08 立体几何中的平行与垂直问题-2021-2022学年高一数学下学期期末必考题型归纳及过关测试(人教A版2019)广西壮族自治区桂林市田家炳中学2023届高三上学期11月月考数学(文)试题
4 . 如图,在
中,
,
,
为
的中点.将
沿着
翻折至
(
平面
),使得
,则
的取值可能为( )
![](https://img.xkw.com/dksih/QBM/2022/4/6/2952476438814720/2952971541708800/STEM/dedd6036-d0fa-4125-99ab-017dfc3c2f07.png?resizew=572)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a355958abf7dc0f2eb949584cb87907b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30e586a8505faad251cc182676e0390.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dddb32a7a5c157fdf8aa049b2d665b4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1732f11409e80c9527efcfaac592ea6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8588e18e27bfebf7c81c7e3c7efb1149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44529c2beb5e27c4471748d48a244275.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://img.xkw.com/dksih/QBM/2022/4/6/2952476438814720/2952971541708800/STEM/dedd6036-d0fa-4125-99ab-017dfc3c2f07.png?resizew=572)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 若m,n是两条不同的直线,α,β,γ是三个不同的平面,则下列命题中的真命题是( )
A.若m⊂β,α⊥β,则m⊥α |
B.若m⊥β,m∥α,则α⊥β |
C.若α⊥γ,α⊥β,则β⊥γ |
D.若α∩γ=m,β∩γ=n,m∥n,则α∥β |
您最近一年使用:0次
名校
6 . 已知平面
平面
,
,
,
,
,垂足为C,
,垂足为D(点C,D不重合),若
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/d54c90c9-9af9-4915-a96b-1ac6878b174d.png?resizew=188)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa807136194c18d3ac58902c67f9333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b707f5ee4fbb2e637c65fbc6d8ed03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb0b6de90bb936cdb09629123100145d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16acea101c98a280a70c2fa0b2c04dd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c638fb895acd987140d0ca6bef097499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb0a2d7d40a6c0bf1fddb802db381689.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dbeb4c1bc4349c1813d78f518bdea3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/d54c90c9-9af9-4915-a96b-1ac6878b174d.png?resizew=188)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
7 . 已知四面体
中,平面
平面
,
是边长为
的等边三角形,
,
,则四面体
的体积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/31e0b2be-335b-4cf3-873d-e16fffe305d6.jpg?resizew=193)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532aece6cfd67e2a97977eed978dbf2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9c7cbcc38b28d45c8539710e5b260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/31e0b2be-335b-4cf3-873d-e16fffe305d6.jpg?resizew=193)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-06-15更新
|
1287次组卷
|
9卷引用:【校级联考】东北三省三校2019届高三第三次模拟考试数学(文)试题
【校级联考】东北三省三校2019届高三第三次模拟考试数学(文)试题安徽省芜湖市华星学校2021届高考数学(文)仿真模拟试题(二)(已下线)考点18 空间几何体的表面积和体积-备战2022年高考数学(文)一轮复习考点微专题(已下线)考点30 空间几何体的表面积与体积-备战2022年高考数学(文)一轮复习考点帮(已下线)考点33 直线、平面垂直的判定及其性质-备战2022年高考数学(文)一轮复习考点帮(已下线)专题04 立体几何-2021年高考真题和模拟题数学(理)专项汇编(全国通用)(已下线)7.3 空间几何体积及表面积(精讲)-【一隅三反】2022年高考数学一轮复习(新高考地区专用)(已下线)模块综合练01立体几何-2022年高考数学(文)一轮复习小题多维练(全国通用)(已下线)专题19 几何体的表面积与体积问题——备战2022年高考数学二轮复习常考点专题突破
2020·全国·模拟预测
解题方法
8 . 如图1,已知等腰梯形
中,
,
,
,现将
沿
折起,使平面
平面
,如图2所示,则三棱锥
外接球的表面积为( )
![](https://img.xkw.com/dksih/QBM/2021/1/12/2634692277608448/2635421546487808/STEM/d2ddc627-35ff-4e91-97b5-41b24d4db64f.png?resizew=484)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c9a3a86b6a0ac804bfda41f02c6ed8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17580410bf63dba4fe164265afaac4cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://img.xkw.com/dksih/QBM/2021/1/12/2634692277608448/2635421546487808/STEM/d2ddc627-35ff-4e91-97b5-41b24d4db64f.png?resizew=484)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020·全国·模拟预测
9 . 如图,在各棱长都为2的直四棱柱
中,
,
为线段
上的动点,且满足
,过
作垂直于平面
的直线
,分别交四棱柱
的表面于
,
两点,当四边形
的面积为
时,
( )
![](https://img.xkw.com/dksih/QBM/2021/1/12/2634690801344512/2635319845388288/STEM/4ac1e33a-1087-4262-a412-b87685f65e72.png?resizew=228)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64822869aee0f91475ca170ea39e15cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4cd2b33bd983a9ed6575b9de04a46a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](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/04e2716ce378210c8f68ef460071d7ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
![](https://img.xkw.com/dksih/QBM/2021/1/12/2634690801344512/2635319845388288/STEM/4ac1e33a-1087-4262-a412-b87685f65e72.png?resizew=228)
A.![]() ![]() | B.![]() | C.![]() | D.![]() ![]() |
您最近一年使用:0次
10 . 在正方体ABCD-A1B1C1D1中,点M,N分别是线段DB1和A1C上不重合的两个动点,则下列结论中正确的个数是( )
![](https://img.xkw.com/dksih/QBM/2020/12/9/2610717837910016/2611752768888832/STEM/ba8dd6ad-0b80-456d-9abf-1b2679107a74.png?resizew=169)
①BC1⊥MN;
②点M在侧面D1DCC1上的投影在D1C上;
③B1N//CM;
④直线BM与直线A1D1为异面直线.
![](https://img.xkw.com/dksih/QBM/2020/12/9/2610717837910016/2611752768888832/STEM/ba8dd6ad-0b80-456d-9abf-1b2679107a74.png?resizew=169)
①BC1⊥MN;
②点M在侧面D1DCC1上的投影在D1C上;
③B1N//CM;
④直线BM与直线A1D1为异面直线.
A.0 | B.1 | C.2 | D.3 |
您最近一年使用:0次