解题方法
1 . 如图,在平行六面体
中,四边形
,
均为矩形,已知
,且二面角
的平面角为
,连接
,
,则四边形
的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47abf7a3691e5bb64716c4e50b43a86d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a015e4b3bf2e3068f64144791c0c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/5e812d89-1ffc-4ace-9571-348cf08c2d4e.png?resizew=164)
您最近一年使用:0次
2022-11-06更新
|
151次组卷
|
2卷引用:四川省成都市蓉城名校联盟2022-2023学年高二上学期期中联考理科数学试题
2 . 如图,在棱长为a的正方体
中,P是
的中点,
是
上的任意一点,
、
是
上的任意两点,且
的长为定值,现有下列结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/5ff3dbc6-6748-412a-b54c-1e83ec19b173.png?resizew=156)
①异面直线
与
所成的角是定值;②点
到平面
的距离是定值;③直线
与平面
所成的角是定值;④三棱锥
的体积是定值.其中正确结论的序号为________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/5ff3dbc6-6748-412a-b54c-1e83ec19b173.png?resizew=156)
①异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1657f0781f2d325a939ebc926e4f4f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d246f9eceab371ebf47a47c2f11a4ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84246f43e21ad37356b653500301d6c4.png)
您最近一年使用:0次
2022-11-02更新
|
584次组卷
|
3卷引用:四川省成都市铁路中学2022-2023学年高二上学期第三次月考数学理科试卷
四川省成都市铁路中学2022-2023学年高二上学期第三次月考数学理科试卷2023届甘肃省高考理科数学模拟试卷(四)(已下线)第二章 立体几何中的计算 专题六 空间定值问题 微点3 立体几何中的定比问题【培优版】
名校
3 . 在平面四边形ABCD中,AD⊥CD,AC⊥BC,∠DAC=∠BAC=30°,现将△ACD沿AC折起,并连接BD,使得平面ACD⊥平面ABC,若所得三棱锥
的外接球的表面积为
,则三棱锥
的体积为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9609625b502348556ff8ba32deac8caa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/5396a460-5ef2-4197-82c7-e4f274666b59.png?resizew=292)
您最近一年使用:0次
2022-11-02更新
|
322次组卷
|
2卷引用:四川省眉山市仁寿第一中学南校区2022-2023学年高二上学期期中考试数学(理)试题
解题方法
4 . 如图,在正方形
中,E,F分别为BC,CD的中点,H为EF的中点,分别沿AE,EF,FA将
,
,
折起,使B、C、D重合于点O,构成四面体
,连接AH,则在四面体
中,下列结论正确的是______ .(写出所有正确结论的序号)
![](https://img.xkw.com/dksih/QBM/2022/10/26/3095802912071680/3098102632513536/STEM/62be564bfacd4e71b988daaf35d027a3.png?resizew=454)
①
平面
;
②
平面
;
③
;
④
;
⑤平面
平面
.
![](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/35e5a933a2a0ff3a28009cc989293ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441dec590b47adc3678a291a3ec89a4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd7177a1af632169e5f4740c1b50d6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd7177a1af632169e5f4740c1b50d6b.png)
![](https://img.xkw.com/dksih/QBM/2022/10/26/3095802912071680/3098102632513536/STEM/62be564bfacd4e71b988daaf35d027a3.png?resizew=454)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce03b310edce42191f9fa75a1c909ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2935a591c968df92a8cdd2bf09d96452.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5365b846c8d6eb432002a4ee32cb9137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2935a591c968df92a8cdd2bf09d96452.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c602c1b4fe562e611247f7f0bd5eee7a.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb03640160bafb4aca92bae25827b272.png)
⑤平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a843b49a121d3f035af5a48196b0ebc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a48b437f403a1879357cece32efada.png)
您最近一年使用:0次
解题方法
5 . 如图,在棱长为1的正方体
中,点P为线段
上的动点(P不与
,C重合),点M,N分别为线段
的中点,则下列说法中正确的是_________________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/396d12ca-c1c8-4740-ad2a-8aef6c4c6908.png?resizew=212)
①
;②三棱锥
的体积随P点位置的变化而变化;
③
的最小值为
;④
的取值范围是
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/542e9974e672753170f8b194ef92199d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/396d12ca-c1c8-4740-ad2a-8aef6c4c6908.png?resizew=212)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bc00eef1ed63477a276563262e85e84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3dd1f6ef98c573fcf07cf5ef3ba9ec7.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d18a8a308f5fe69bbd8c45d056b4bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc6913da03b6e87d163d17c1dc34295c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14f12d256d97e21a824c026eb1ebb381.png)
您最近一年使用:0次
名校
解题方法
6 . 如图甲,已知正方体
的棱长为
分别是线段
上的动点,当三棱锥
的俯视图如图乙所示时,挖去三棱锥
,得到一个几何体模型(该模型为正方体
挖去三棱锥
后所得的几何体),若利用
打印技术制作该模型,且
打印所用原料密度为
,不考虑打印损耗,制作该模型所需原料的质量为__________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7ddbb49c644bf06ccbad885ba2c84a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0516a9a81529b4f607a564c931c6b6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/472bb3708238320d1ccaa1f086e35e5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241a67cd3e89dfd3554e4a340afb6a68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241a67cd3e89dfd3554e4a340afb6a68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7ddbb49c644bf06ccbad885ba2c84a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241a67cd3e89dfd3554e4a340afb6a68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e309cb3684f920ada120575a29ca32e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e309cb3684f920ada120575a29ca32e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11a7ccf1787508c6a9228e81da98bb76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1508f9d3817f5b3b2ee39cb351fb573.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/2cf51cbb-5ae7-4c49-bebc-9eedb562bbaa.png?resizew=307)
您最近一年使用:0次
2022-10-25更新
|
243次组卷
|
4卷引用:四川省广安市岳池县2022-2023学年高三上学期10月月考数学(理)试题
7 . 将正方形
沿对角线
折成直二面角
,有如下四个结论:
①
; ②
是等边三角形;
③二面角
的度数为60°; ④
与
所成的角是60°.
其中正确结论的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cc9a3ee6703f7602460657edc469278.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3031d5c9d5632740fcbd52d5d621da8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e481098f22a462deb2fcf2f895eb9085.png)
③二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d56b54d810f4b66036abb67141d9055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
其中正确结论的序号是
您最近一年使用:0次
名校
解题方法
8 . 如图所示,在长方体
中,
,点
是棱
上的一个动点,若平面
交棱
于点
,给出下列命题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/cc4fce1e-276b-4eed-9181-b794bbb34d6d.png?resizew=184)
①四棱锥
的体积恒为定值;
②存在点
,使得
平面
;
③对于棱
上任意一点
,在棱
上均有相应的点
,使得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
平面
;
④存在唯一的点
,使得截面四边形
的周长取得最小值.
其中真命题的是_____________ . (填写所有正确答案的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b378805114b83f76fcece53698a28d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dce95726804cf91de63f07b37c65da6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbb16f7dbc4b9993c4efa0764df1d8ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6e92aadc02ae971ed29bb2db51b012f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e17230625e72d3a9c6d72ff61019ff61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655b6a742dbacdab5aaa298007663dd4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/cc4fce1e-276b-4eed-9181-b794bbb34d6d.png?resizew=184)
①四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb7c649d4bbd61eaef51e529ef9b1204.png)
②存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bac4ff764651106d9ab46855f20331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7759e75f16985d39b854e45774f06a86.png)
③对于棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbb16f7dbc4b9993c4efa0764df1d8ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c23c66ab7d74f51cb4b79d1029fb38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc3e8a1475b983d1a4295db0e16d4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7003aee0b4b85f0fdd48ca9ae5826d54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85bed42b435afda8e8c47dd0da8e4a1f.png)
④存在唯一的点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/422676748fd5d893c0e4331fee24e473.png)
其中真命题的是
您最近一年使用:0次
2022-10-07更新
|
343次组卷
|
11卷引用:四川省内江市2019-2020学年高二上学期期末数学(理)试题
四川省内江市2019-2020学年高二上学期期末数学(理)试题四川省成都市第八中学校2022-2023学年高三上学期第一次摸底考试文科数学试题黑龙江省大庆市大庆实验中学2019-2020学年高三上学期期中数学(文)试题湖南省邵阳市邵东县第十中学2020届高三下学期模拟考试数学(理)试题黑龙江省鹤岗市第一中学2020-2021学年高二10月月考数学(理)试题河北省张家口市第一中学2021届高三(衔接班)上学期期中数学试题宁夏银川一中2021届高三第六次月考数学(理)试题(已下线)专题4.5 立体几何中探索性问题-玩转压轴题,进军满分之2021高考数学选择题填空题宁夏银川一中2021届高三第六次月考数学(文)试题河南省顶级名校2022-2023学年高三上学期12月摸底考试数学(文)试题(已下线)模块三 专题3 小题满分挑战练(3)(人教B)
9 . 已知在直三棱柱
中,
,
,
,则点
到平面
的距离为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af0e44cb429eea46e7ee4320147192b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
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2022-09-29更新
|
320次组卷
|
2卷引用:四川省眉山第一中学2022-2023学年高二上学期10月月考数学(文科)试题
10 . 如图,已知圆
的直径
长为 2 ,上半圆圆弧上有一点
,点
是劣弧
上的动点,点
是下半圆弧上的动点,现以
为折线,将上、下半圆所在的平面折成直二面角,连接
则三棱锥
的最大体积为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c76742b51590b09ac5b3083c3f04262c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f38a765027a32ad93c4391c842658f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c76742b51590b09ac5b3083c3f04262c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02a85ddbb7ce8d115ff7e4412dedea2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23d352cc181bd3e1172014eadc9ab0e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/13/1ac91a95-a0b6-4ea6-8a82-3d382a269d29.png?resizew=329)
您最近一年使用:0次
2022-09-12更新
|
331次组卷
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