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Тетивен четириаголник 1
Кога е еден четириаголник тетивен, т.е. кога има опишана кружница (низ 4-те темиња)?
Има три прашања. [b]Кликни на 1![/b]
Види и ова: [url]http://www.geogebratube.org/student/m91046[/url]