Определи градусные меры углов по рисунку

Ответ:

\(\angle OBF=\) [ ] \(\degree \) ;

\(\angle OBE=\) [ ] \(\degree \) ;

\(\angle OBD=\) [ ] \(\degree \) ;

\(\angle OBC=\) [ ] \(\degree \) ;

\(\angle OBA=\) [ ] \(\degree \) .