Proto-Slavic *ǫgъlъ

→ Belarusian вугал (inherited)

→ Bulgarian ъгъл (inherited)

→ Bulgarian Онгъл (derived)

→ Czech úhel (inherited)

→ Old Church Slavonic ѫгълъ (inherited)

→ Lower Sorbian nugeł (inherited)

→ Upper Sorbian nuhł (inherited)

→ Macedonian агол (inherited)

→ Polish węgieł (inherited)

→ Russian угол (inherited)

→ Serbo-Croatian ugao (inherited)

→ Serbo-Croatian угао (inherited)

→ Serbo-Croatian vugel (inherited)

→ Slovak uhol (inherited)

→ Slovene vogal (inherited)

→ Slovene ogel (inherited)

→ Ukrainian вугол (inherited)