As the above poster said, family history is a very good indicator. It is not a completely foolproof indicator though, because sometimes male pattern baldness can exist where there's no family history of it at all, and this is true for any age that it can occur. Your family history will give you a good indication though.
The part in your hair does look larger than average. Its hard to judge if you have hair loss to be honest. Do you have any photos that show your temple region more clearly, such as photos from a side angle that show your temples with your hair pulled back?