如图,平行六面体
的底面
是矩形,
,
,
,且
,则线段
的长为_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88c44f558705de3bcefcfc0ece96b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf90bac174f02c4552e56df4d910bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e322f79e083e471b34950b9ffabffdc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/26/f4bce65d-a05b-437c-829e-0aeccc23f7f2.png?resizew=164)
更新时间:2023-09-26 07:06:23
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【知识点】 空间向量数量积的应用
相似题推荐
填空题-单空题
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适中
(0.65)
【推荐1】在如图所示的平行六面体
中,已知
,
,
,N为
上一点,且
.若
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf1132330203ed3270a52e0fbd0f34e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f13213434537a2c768a367e2dce11a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d76ebfa48fbd7a62488731294de8df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28408efa93ec310ccdf156c02fc6c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abc14c781097654ee29b6b5435c31480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/4/724324ef-11cb-439d-8338-1844834e807f.png?resizew=189)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
【推荐2】如图,已知正方体
,设
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54829523c0892bc56e44bc5ceb468cfe.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4df45582a78652416cb16d803ec94362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf9fcb6abd253ff4fbd33df953564820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ad286441e90dfe934235d691ca2c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54829523c0892bc56e44bc5ceb468cfe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/3/ff47ad95-69ad-4de2-86fb-7aa9c333fbbe.png?resizew=180)
您最近一年使用:0次