Circle Geometry Help (1 Viewer)

[Andy005]

https://drive.google.com/open?id=0B_RlXPQTW1cRQUlmYURxeWZjZkE

Any help would be greatly appreciated.

Thanks

 

[K-dogg]

From the diagram setup it seems likely you'll be using the alternate segment theorem.
I'll start from BDA = MAB (AST)

 

[pikachu975]

let MAB = a, BAD = b
BDA = MAB = a (angles in alternate segments)
BCA = BDA = a (angles in the same segment)
NAC = BCA = a (alternate angles, MN || BC)
CDA = NAC = a (angles in alternate segments)

BDA = CDA = a therefore AD bisects BDC