名校
解题方法
1 . 在正四面体
(所有棱长均相等的三棱锥)中,点
在棱
上,满足
,点
为线段
上的动点.设直线
与平面
所成的角为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02c25b95e61557eec096de150ab873f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac93e58e9bba899df62a4cda5f1a5ca2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.存在某个位置,使得![]() | B.存在某个位置,使得![]() |
C.存在某个位置,使得平面![]() ![]() | D.存在某个位置,使得![]() |
您最近一年使用:0次
2020-07-16更新
|
1471次组卷
|
7卷引用:专题06 空间向量与立体几何(难点)-2020-2021学年高二数学下学期期末专项复习(北师大版2019选择性必修第一册、第二册)
(已下线)专题06 空间向量与立体几何(难点)-2020-2021学年高二数学下学期期末专项复习(北师大版2019选择性必修第一册、第二册)(已下线)专题03 空间向量与立体几何的压轴题(一)-【尖子生专用】2021-2022学年高二数学考点培优训练(人教A版2019选择性必修第一册)浙江省舟山中学2020届高三下学期6月高考仿真模拟数学试题广西玉林市田家炳中学2020-2021学年高二上学期质量检测数学试题(已下线)专题8-4 立体几何中求角度、距离类型-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)浙江省杭州东方中学2022-2023学年高二上学期期中数学试题(已下线)第3章 空间向量及其应用 单元综合检测(难点)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
名校
解题方法
2 . 在正四棱锥
中,底面边长为
,侧棱
,
为
的中点,
为直线
上一点,且
与
、
不重合,若异面直线
与
所成角为
,则三棱锥
的体积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebfcf34539673d516eb9b259951a81ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2779dadea3edbad43e6133f35c1cde5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4fce8e923062b9779553d6f282895b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12472c0a67b1e0d87a5c0ccde0b6ca3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c51d16ed607407429e6640ad90d75b9.png)
您最近一年使用:0次
2020-07-15更新
|
942次组卷
|
5卷引用:黑龙江省七台河市勃利县高级中学2021-2022学年高二上学期9月月考数学试题
黑龙江省七台河市勃利县高级中学2021-2022学年高二上学期9月月考数学试题河南省2020届高三6月联考全国1卷阶段性测试(四)理科数学试题黑龙江省齐齐哈尔市第八中学校2022-2023学年高二上学期10月月考数学试题(已下线)专题 1.2空间向量:求距离与角度13种题型归类(2)(已下线)专题03 空间向量的应用压轴题(5类题型+过关检测)-【常考压轴题】2023-2024学年高二数学上学期压轴题攻略(人教A版2019选择性必修第一册)
名校
解题方法
3 . 已知正方体
棱长为
,如图,
为
上的动点,
平面
.下面说法正确的是()
![](https://img.xkw.com/dksih/QBM/2020/7/2/2497147850006528/2497362187362304/STEM/0b7f09cb57364e58a9b7a42001da07a0.png?resizew=240)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.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/7d0edb1508fc95765f3bb316bcb5252d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/2020/7/2/2497147850006528/2497362187362304/STEM/0b7f09cb57364e58a9b7a42001da07a0.png?resizew=240)
A.直线![]() ![]() ![]() |
B.点![]() ![]() ![]() |
C.点![]() ![]() ![]() ![]() ![]() |
D.已知![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2020-07-02更新
|
6023次组卷
|
18卷引用:专题1.4 空间向量与立体几何(B卷提升篇)-2020-2021学年高二数学选择性必修第一册同步单元AB卷(新教材人教B版)
专题1.4 空间向量与立体几何(B卷提升篇)-2020-2021学年高二数学选择性必修第一册同步单元AB卷(新教材人教B版)河北省衡水中学2021届高三上学期四调数学(理)试题湖北省武汉市汉阳一中2021届高三下学期三模数学试题广东省深圳福田区红岭中学2021届高考二模数学试题江苏省苏高中2022届高三上学期9月期初考试数学试题(已下线)专题03 立体几何中的动点问题和最值问题-【重难点突破】2021-2022学年高二数学上册常考题专练(人教A版2019选择性必修第一册)福建省泉州科技中学2021-2022学年高二上学期第一次月考数学试题广东省广州市部分学校2021-2022学年高二上学期期中联考数学试题福建省晋江市第一中学2021-2022学年高二上学期线上学习诊断暨单元测试(第一次月考)数学试题山东师范大学附属中学2020届高三最后一卷(打靶卷)数学试题山东师范大学附属中学2020届高三6月模拟检测数学试题(已下线)第六单元立体几何初步(A卷 基础过关检查)-2021年高考数学一轮复习单元滚动双测卷(新高考地区专用)(已下线)2021届高三数学新高考“8+4+4”小题狂练(42)(已下线)2021届高三数学新高考“8+4+4”小题狂练(45)广东省汕头市潮阳实验学校2020-2021学年高二上学期第二次月考数学试题广东省开平市第一中学2022-2023学年高二上学期10月月考数学试题重庆市广益中学校2023-2024学年高二上学期10月月考数学试题福建省泉州市第七中学2023-2024学年高二上学期期中考试数学试卷
名校
解题方法
4 . 如图,已知四棱锥
的底面是菱形,对角线
,
交于点
,
,
,
,
底面
,设点
满足
.
![](https://img.xkw.com/dksih/QBM/2020/4/16/2442972162203648/2443665956724736/STEM/05ae41ba23a548d9b3901fb533e4333d.png?resizew=174)
(1)若
,求二面角
的大小;
(2)若直线
与平面
所成角的正弦值
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f561a36cc4c9293d8a63ee4e1a7146b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e2857963e3ea3578e9a13638c3a2c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b02672185596d0be60de9e2e93afb59e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc6f007dbf1c1a36eb031e520608403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75ff968fd0709d072c7a4b7000a411e4.png)
![](https://img.xkw.com/dksih/QBM/2020/4/16/2442972162203648/2443665956724736/STEM/05ae41ba23a548d9b3901fb533e4333d.png?resizew=174)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1c3ea872a20fdc1843cb5ffce8a554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e9ac46aabe38e5ea1a8cb0febc98af.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d83fb9ac8a18e78a4c56da79514b5ccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2020-04-17更新
|
1290次组卷
|
5卷引用:辽宁省抚顺市抚顺县高级中学校2021-2022学年高二上学期10月月考数学试题
辽宁省抚顺市抚顺县高级中学校2021-2022学年高二上学期10月月考数学试题(已下线)专题4.1 第一、二章(空间向量与立体几何、直线和圆的方程)阶段检测-【满分计划】2021-2022学年高二数学阶段性复习测试卷(人教A版2019选择性必修第一册)江苏省扬州市高邮市2018-2019学年高二下学期期中数学(理)试题江苏省镇江市扬中市第二高级中学2020-2021学年高三上学期初检测数学试题重庆市暨华中学2020-2021学年高二上学期第二次月考数学试题
解题方法
5 . 如图,在三棱锥
中,
是等边三角形,
,
,
为三棱锥
外一点,且
为等边三角形.
![](https://img.xkw.com/dksih/QBM/2020/4/10/2438547643670528/2439078476341248/STEM/e617c279eccb43779c18736c1b9dba78.png?resizew=189)
证明:
;
若平面
平面
,平面
与平面
所成锐二面角的余弦值为
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd6a2b112facda441f4e34bf5c145fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/503c035fc57fb25aede1445af9aa2747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://img.xkw.com/dksih/QBM/2020/4/10/2438547643670528/2439078476341248/STEM/e617c279eccb43779c18736c1b9dba78.png?resizew=189)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.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/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2977ae4bfa32de8c6f0fb136205c4fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
您最近一年使用:0次
2020-04-11更新
|
1542次组卷
|
5卷引用:福建省福州文博中学2021-2022学年高二上学期第一次月考数学试题
福建省福州文博中学2021-2022学年高二上学期第一次月考数学试题2020届百校联考高考百日冲刺金卷全国Ⅱ卷·数学(理)(三)试题2020届百校联考高考百日冲刺金卷全国Ⅰ卷·数学(理)(三)试题2020年百校联考高考百日冲刺数学(理科)(三)(全国二卷)试题(已下线)专题19 立体几何综合-2020年高考数学母题题源全揭秘(浙江专版)
名校
解题方法
6 . 在正方体
中,已知点
在直线
上运动,则下列四个命题中:①三棱锥
的体积不变;②
;③当
为
中点时,二面角
的余弦值为
;④若正方体的棱长为2,则
的最小值为
;其中说法正确的是____________ (写出所有说法正确的编号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a48eaae75c1f0800671a8dc49665fb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48372621eac4d358cbb2260c865baabb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eef6e8a2a3188e080c8a9052b766f556.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/529e99ffa725e8b05550ac6a40ce4834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44730465d87ceb931c66b894595f52c6.png)
您最近一年使用:0次
2020-04-08更新
|
816次组卷
|
3卷引用:安徽省合肥市第六中学2021-2022学年高二上学期10月单元教学评价数学试题
2020高三·全国·专题练习
7 . 已知椭圆
的左、右焦点分别为
、
.经过点
且倾斜角为
的直线
与椭圆
交于
、
两点(其中点
在
轴上方),
的周长为8.
的标准方程;
(2)如图,把平面
沿
轴折起来,使
轴正半轴和
轴确定的半平面,与
负半轴和
轴所确定的半平面互相垂直.
①若
,求异面直线
和
所成角的余弦;
②若折叠后
的周长为
,求
的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9bece414af7ecb2d796dc8a6f549e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e62a44b8712ce4483b8710cda0dc1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d49bc14700562fee13af6a548e4eaef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5e56b5cbcf69756792fc934bcc20cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(2)如图,把平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc1f08c7640e62e8717abf4d44a6c83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabea664e61863b3b3279dbce607924e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3656055f5256cd06e636ea96e9f89c2.png)
②若折叠后
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5e56b5cbcf69756792fc934bcc20cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7163395f9aaa29be7f6b3106ba48b744.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
名校
解题方法
8 . 如图,在四棱锥
中,四边形
为平行四边形,
为边长为2的等边三角形,O为
的中点,
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/3739b78b-2433-48f1-92a3-b1b93744c11f.png?resizew=185)
(1)求证:
;
(2)当四边形
为菱形时,求
与平面
所成角大小的正弦值.
![](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/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b7675ff57bdccb95a8241c1cd09f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d781525777c7b5284dffc70b2a28a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/3739b78b-2433-48f1-92a3-b1b93744c11f.png?resizew=185)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c5c1737061bd9da03897a79e7b243f.png)
(2)当四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2020-03-26更新
|
866次组卷
|
2卷引用:辽宁省大连市第八中学2021-2022学年高二上学期10月阶段考试数学试题
名校
解题方法
9 . 如图,在正方体
中,
是
中点,点
在线段
上,若直线
与平面
所成的角为
,则
的取值范围是( ).
![](https://img.xkw.com/dksih/QBM/2020/3/23/2425616040173568/2425991340253184/STEM/2b81e22f3e3d4e18a976c9d458248085.png?resizew=190)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9539f8fb13345b449274b67bbda995db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
![](https://img.xkw.com/dksih/QBM/2020/3/23/2425616040173568/2425991340253184/STEM/2b81e22f3e3d4e18a976c9d458248085.png?resizew=190)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-03-23更新
|
785次组卷
|
4卷引用:四川省内江市第六中学2021-2022学年高二上学期第一次月考创新班理科数学试题
名校
解题方法
10 . 如图所示,正方体
的棱长为1,
,
为线段
,
上的动点,过点
,
,
的平面截该正方体的截面记为
,则下列命题正确的是________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/6d16c941-38b8-487f-9c3d-4201a84685f5.png?resizew=159)
①当
且
时,
为等腰梯形;
②当
,
分别为
,
的中点时,几何体
的体积为
;
③当
为
中点且
时,
与
的交点为
,满足
;
④当
且
时,
的面积
.
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.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/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/6d16c941-38b8-487f-9c3d-4201a84685f5.png?resizew=159)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3324433cbbf6a7704b585b6a7692403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cd2c8f16f3a858f2b37e29574bb2530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
②当
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5ac8a6f41e4b143675f07c07b599246.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d7abf02717d6e59d8a64a65a87c412.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/102f4da3f6d889878c591d6daabc5714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5cdaa601ee346f02218ba3ffd9da4b5.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f2cf3cea17ced18ebfafb8aa3f107d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70d9fc9f2498c4759a33af476443f2a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
您最近一年使用:0次
2020-03-18更新
|
948次组卷
|
3卷引用:卷04 高二上学期10月第一次月考——重难点突破 B卷-【重难点突破】2021-2022学年高二数学上册常考题专练(人教A版2019选择性必修第一册)
(已下线)卷04 高二上学期10月第一次月考——重难点突破 B卷-【重难点突破】2021-2022学年高二数学上册常考题专练(人教A版2019选择性必修第一册)河北省武邑中学2018-2019学年高二下学期期末数学(理)试题辽宁省沈阳市东北育才学校2023-2024学年高二上学期期中数学试题