위키백과 ― 우리 모두의 백과사전.
Penrose triangle
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In case this is not legally possible:
[[:Deco:User:{{{3}}}|{{{3}}}]] grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
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From en:Image:Penrose triangle.png
그림 고리
다음 문서들이 이 그림을 사용하고 있습니다: