Geometry worksheet focusing on central angles and arcs, with nine exercises involving circles, angles, and arc measures.

Final Answer:
1. $ m\overset{\frown}{AB} = 110^\circ $, $ m\angle ACB = 55^\circ $
2. $ m\overset{\frown}{ACB} = 190^\circ $, $ m\angle AOB = 170^\circ $
3. $ m\overset{\frown}{AB} = 40^\circ $, $ m\angle BCA = 20^\circ $
4. $ m\overset{\frown}{AC} = 125^\circ $, $ m\angle CBA = 62.5^\circ $
5. $ m\overset{\frown}{AOB} = 130^\circ $, $ m\angle COA = 50^\circ $
6. $ m\overset{\frown}{CAB} = 325^\circ $, $ m\angle ABC = 162.5^\circ $
7. $ m\overset{\frown}{ED} = 75^\circ $, $ m\angle COB = 90^\circ $, $ m\overset{\frown}{AB} = 180^\circ $, $ m\angle BOE = 135^\circ $
8. $ m\overset{\frown}{AE} = 150^\circ $, $ m\overset{\frown}{AB} = 120^\circ $, $ m\overset{\frown}{ECB} = 210^\circ $, $ m\angle BOC = 90^\circ $
9. $ m\overset{\frown}{DC} = 40^\circ $, $ m\angle EAB = 55^\circ $, $ m\angle ACB = 55^\circ $, $ m\angle AOB = 110^\circ $