Naming angles

what is another name for angles CPA so we have C we have P and we have a so angle CPA is going to be this angle right over here so what's another name for it well I could start off with a and I could call it angle a PC so this is the same thing as angle a PC now R is that any one of my choices yeah that's this choice that's this choice right over here if someone said angle P that wouldn't give you a lot of information that kind of says well you know that's only giving me one point I don't know maybe it's referring to that angle that angle that angle that angle so that's really not giving me enough information to specify this angle right over here angle P AC angle P AC would be an angle formed if you actually had a line here if you had a line between AC angle P AC would be this angle right over here which is clearly a different angle angle F PA f PA would be this angle right over here which is also clearly a different angle so the only choice that makes sense is angle a PC