1 . 如图,在四棱锥
中,底面
为菱形,
,
,
为棱
的中点,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d476da94dcade5f83541f3fca22a1039.png)
______ .
![](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/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/970bd8c6012979f91c4b370fad352d47.png)
![](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/20f88c036d89f947473c4e831d565da0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d476da94dcade5f83541f3fca22a1039.png)
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2 . 《九章算术》中的“商功”篇主要讲述了以立体几何为主的各种形体体积的计算,其中堑堵是指底面为直角三角形的直棱柱.如图,在堑堵
中,
分别是
,
的中点,
是
的中点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee477d164d38ff067fc4ce342cf6d380.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7d81947c03e5677e0d8828fe7fcd7d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee477d164d38ff067fc4ce342cf6d380.png)
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3 . 在四面体OABC中,
是棱OA上靠近
的三等分点,
分别是
的中点,设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e33a7fe8acce3fc214d44459e92ffa97.png)
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee477d164d38ff067fc4ce342cf6d380.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/518407c06c4c966f670ea9d2414984a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fa87ac2b7d6a58f5aaee923d83f799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e33a7fe8acce3fc214d44459e92ffa97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71af5e80069433636f4ef0227a508dc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a8d49bf33e578b25811e22e26dbf584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee477d164d38ff067fc4ce342cf6d380.png)
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4 . 各棱长均为1且底面为正方形的平行六面体
,满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6660dbf8615c2a0dda71f6d9f395c1a5.png)
______ ;此平行六面体的体积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ecbca919bff5a39a99dd7f867dd61f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6660dbf8615c2a0dda71f6d9f395c1a5.png)
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2024-01-18更新
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5卷引用:广东省广州科学城中学2023-2024学年高一下学期期中检测数学试题
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5 . 在三棱锥
中,
在线段
上,满足
是平面
内任意一点,
,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/656a93925561a68ac02e7352c933085c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f98d6d60d31af127291c3d22a7aa5b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
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2023-11-25更新
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5卷引用:四川省成都市树德中学2023-2024学年高二上学期期中考试数学试题
四川省成都市树德中学2023-2024学年高二上学期期中考试数学试题四川省内江市第二中学2023-2024学年高二上学期12月月考数学试题(已下线)专题01 空间向量与立体几何(1)(已下线)第3章 空间向量及其应用(知识归纳+题型突破)-2023-2024学年高二数学单元速记·巧练(沪教版2020选择性必修第一册)山东省枣庄市滕州市2023-2024学年高二上学期期末数学试题
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6 . 已知空间向量
,
,若
,
,
可以构成空间向量的一个基底,则实数x的取值范围为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df3475d6a1cb27cf459b96c2875aad60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eb4d2302ade6a1aff6d9017caadaed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
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7 . 如图,在四面体
中,
是
的中点,
是
的中点,若
,则乘积![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b11714ea4eb3fd2349854ff2c96b4f9.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/933cf4d91008779cec543cc771fd9593.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b11714ea4eb3fd2349854ff2c96b4f9.png)
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8 . 已知
、
、
为空间中三个单位向量,且
、
、
与
夹角为
,点P为空间一点,满足
且
,则
最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef8337706c550bc095d7a2bd872221a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4876efa91f38d11ce12fed2e1fbf2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d514783895850481ebcb10d8b8354884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef8337706c550bc095d7a2bd872221a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231b861d6d1f1d0b9f52b041cb40eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6dfcefb063de42c54340b4378dfee89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b08927eb957325eead728098d7c61587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49eaf009bccbdd52b1a9817a8a3e5e23.png)
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9 . 如图,两个正方形ABCD,CDEF的边长都是6,且二面角
为
,M为对角线AC靠近点A的三等分点,N为对角线DF的中点,则线段MN=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1d76403bac26df50d934d93586f8a11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
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2023-09-17更新
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9卷引用:江苏省郑梁梅高级中学2022-2023学年高二下学期期中数学试题
江苏省郑梁梅高级中学2022-2023学年高二下学期期中数学试题内蒙古乌兰察布市四子王旗宽高实验学校2023-2024学年高二上学期期中数学试题四川省绵阳南山中学2023-2024学年高二上学期期中考试数试题湖南省永州市宁远县第二中学2023-2024学年高二上学期9月联考数学试题河北省衡水市第十四中学2023-2024学年高二上学期一调数学试题山东省临沂市平邑县平邑县第一中学2022-2023学年高二上学期10月月考数学试题(已下线)专题 01 空间基底及综合应用(3)(已下线)专题 01 空间基底及综合应用(4)安徽省合肥市第一中学2023-2024学年高二上学期素质拓展训练(10)数学试题
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10 . 如图,已知平行六面体
中,
,
,
.
为
的中点,则
长度为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd694ad3a4733c7c84aaa7946aeea4de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a66200ae44919a57caf401a6d47737ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2555ddf0e1c249150fd1873e75d1420.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20f758b78070af2142f7d26d56a769b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b094e639c2b31dc54b1b3e6456e77843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1165830b314a0dab65ea267e82bd3f6.png)
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2023-07-28更新
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4卷引用:江苏省扬州市宝应县2022-2023学年高二下学期期中数学试题