He is beaten to a pulp by Peacekeepers for defying the Capitol with Katniss's wedding dress.
Yes.
No, but he dies in Catching Fire.
Cinna dies, when they torture him to death in an attempt to break katniss, in catching fire.
Cinna is tortured by the Peacekeepers on pages 262 to 263.
Sadly... yes, but is isn't confirmed until Mockingjay, the third book.
When Cinna made the Mockingjay out fit for Katniss, the Capitol did not like it because it was an act of rebellion by resisting the Capitol, and what it looks like is that the Mockingjay represents a symbol of resistance. So they beat him to death to punish him. That's how the Capitol works.
cinna died in catching fire when catnis was on her plate to begen the quatre quell when a peace keeper gaurd killed him. and about 16-18 other tributes during the game
Finnick actually doesn't die in Catching Fire
No.
No
no
Katniss, Peeta, Haymitch, Finnick, Betee, Johanna, Cinna, Gale, Thread, President Snow