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[几何] 正方体投影面积问题

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Tesla35 Posted 2014-1-26 09:13 |Read mode
Last edited by hbghlyj 2025-5-28 23:07转载自:tieba.baidu.com/p/2833224698

棱长为1的正方体随意摆放,其三视图面积之和的最大值为_____,最小值为_____。

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乌贼 Posted 2014-1-26 14:18
Last edited by 乌贼 2014-1-26 15:00:与立方体一面垂直时最小,由$AO,CO,B'O$方向时最大
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 Author| Tesla35 Posted 2014-9-18 20:29
电脑里找到了一篇文章:
Note1.jpg
Note2.jpg

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isee Posted 2014-9-18 20:38
回复 3# Tesla35


    数学大世界?

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 Author| Tesla35 Posted 2014-9-18 21:20
回复 4# isee

翻电脑里的文档看到的

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其妙 Posted 2014-9-20 16:16
回复 5# Tesla35
这都找得到,

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kuing Posted 2014-12-20 19:52
回复 3# Tesla35

这个平行且等于有点丑

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