Geometry Circles

[Cenicola]

Can you please do this example Geometry Problem so i may understand how to do my homework. Circle O with Tangent line DE and measure of arc BC: arc CD arc AD and arc AB=7:8:12:9 Find out all of the numbered angles. angles are numbered 1-12. thank you so much

 

[Denis]

Your problem as posted makes no sense; like, which 12 angles? Where's point E?
Can you provide a diagram?