An diofar eadar na mùthaidhean a rinneadh air "Ceithir-cheàrnach"

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b robot Adding: eo:Kvarlatero
Loidhne 95:
[[ca:Quadrilàter]]
[[cs:Čtyřúhelník]]
[[cv:Тăват кĕтеслĕх]]
[[da:Firkant]]
[[de:Viereck]]