9. Exercise problems IV

In the given figure, \(\Delta ODC \sim \Delta OBA\), \(\angle BOC = 125^\circ\) and \(\angle CDO = 70^\circ\). Find \(\angle DOC\), \(\angle DCO\) and \(\angle OAB\).

 

 

\(\angle DOC\) \(=\) \(^\circ\)

 

\(\angle DCO\) \(=\) \(^\circ\)

 

\(\angle OAB\) \(=\) \(^\circ\)