La bildo estas kopiita de wikipedia:en. La originala priskribo estas:

Opis izmjene

I made this image It is a model for understanding non-euclidean geometry

Licenciranje

Ja, vlasnik autorskog prava ovog djela, objavljujem ovaj rad u javno vlasništvo. Ovo se primjenjuje u cijelom svijetu. U nekim državama ovo zakonski nije moguće; u tom slučaju: Ja dopuštam svima pravo korištenja ovog rada u bilo koju svrhu, bez ikakvih uslova, osim ako su takvi uslovi zakonski neophodni.

Izvorna evidencija postavljanja

Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version.

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• (del) (cur) 16:47, 24 December 2005 . . en:User:RobertBorgersen RobertBorgersen ( en:User_talk:RobertBorgersen Talk) . . 263x263 (11033 bytes) (Thanks for diagram! Made the diagram clearer, added angles, referred to lines differently than points (lowercase script vs uppercase arial).)
• (del) (rev) 05:44, 24 December 2005 . . SJCstudent ( en:User_talk:SJCstudent Talk) . . 263x263 (26270 bytes) (I made this image It is a model for understanding non-euclidean geometry)