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[几何] 凸五边形密铺求角

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hejoseph posted 2023-12-18 14:12 |Read mode
Last edited by hejoseph 2023-12-18 15:01如下图 1 的凸五边形 $ABCDE$ 中 $AB=a$,$BC=b$,$CD=c$,$DE=d$,$EA=e$,满足 $2b=c=d=2e$,$\angle A=90^\circ$,$2\angle B+\angle C=360^\circ$,$\angle C+\angle E=180^\circ$。如图 1 的六个全等凸五边形按图 2 的方式拼接后作为密铺单元,图 3 利用图 2 的密铺单元铺满的平面。求凸五边形 $ABCDE$ 的各个内角以及 $a:b$。

1.png
图1

2.png
图2

3.png
图3

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kuing posted 2023-12-18 14:18
Last edited by kuing 2023-12-18 14:35
  1. [tikz][/tikz]
Copy the Code
里面也要写 \begin{tikzpicture} \end{...


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哦,已经换成图片了

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下次试试,题目之前复制错了,更正了  posted 2023-12-18 14:29

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original poster hejoseph posted 2024-1-5 16:44
发一个正多边形密铺的文档
$type 正多边形密铺.pdf (37.58 KB, Downloads: 54)

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