名校
解题方法
1 . 《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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2 . 已知长方体
中,点Q为线段
的中点,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a01d0265627ee0ed15b86b0146a4839a.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c132cb65943eb8785a5fab73d7bb88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a01d0265627ee0ed15b86b0146a4839a.png)
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3 . 如图,在四面体
中,
,
,
.点
在
上,且
,
为
的中点,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/4/0b36467a-78c4-4342-b380-cf1093042676.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14390e9b6b44472bdc7a131133ab39b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cd14dfc0024459f9d8e594c95c5106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07dcf0b16163e0e0e0c0f248466ee7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f1bfe991bf8ed3609a0e15ce6720d9c.png)
![](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/8926ddd0b69d714c7310cc5bf23d199d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/4/0b36467a-78c4-4342-b380-cf1093042676.png?resizew=161)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2024-01-18更新
|
626次组卷
|
4卷引用:上海市育才中学2024届高三下学期第一次调研(3月)数学试题
名校
4 . 在四面体 中,
分别为
的中点,则
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5 . 如图,空间四边形OACB中,
=
,
=
,
=
,点M在OA上,且
,点N为BC中点,则
等于__ .(用向量
表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3da656bfd906b1eb6cffdada50db3b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9a6df89d21d97de4928ee94b2c6af33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a014dff8997c661055229de29c61cfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae951e0bb5a2a406f1572fc1e4964265.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/072fb951-ad1e-4adb-a655-f636ed9c8e3d.png?resizew=170)
您最近一年使用:0次
名校
6 . 平行六面体中,若
,
,
,则
=
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7 . 如图,在平行六面体
中,
, ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0c46783b77cce2bd4b45b9acc61884.png)
则
=____ ,
=____ (
,
精确到0.1).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ecd2fb9d59e0d9a46ea3062f566ff40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0c46783b77cce2bd4b45b9acc61884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369056cce7ae550158fa9c1c7772da59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8bad16b7cdf8c638cd324f5be5d834f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc42fb48159c7259b66a719faa60459.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721554f715d299b5e1974e58aae90897.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df276e9b9424486d59c747f1227b213c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/8/c723fe5c-1995-442e-a813-ac30bfc335c9.png?resizew=156)
您最近一年使用:0次
解题方法
8 . 在平行六面体
中,
为棱
的中点,
为棱
上一点.记
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2274dc3fa66691f74ee9a5b016c1906c.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f910087a697ee4c768ca68b8ef14cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a4a614c28b4b9f4a9cc67f0d0c1c7a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2274dc3fa66691f74ee9a5b016c1906c.png)
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23-24高二上·上海·课后作业
9 . 如图,在直三棱柱
中,
,
,
,将向量
表示为
、
、
的线性组合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/319ad2785c82f621c4b807bb9a2493c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9a6facc3f8956c8fea30f60455804f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22226e7f4eae1d4c37a74321b60f0870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6d63a6284e4361830a4f19c43e783c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/14/4e1e676c-45f2-43e6-ab35-3212a36f59af.png?resizew=156)
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