1) you fake a lunge and dodge as the dragon swoops down upon you and in a flash jump and turn with a downward slash, knocking the dragon to the ground. you continue to pummel the dragon and hope it dies or is wounded seriously enough to not be able to fly away
2) you run from it, see some rocks that you jump on and as the dragon flies past you trying to change it's course, you jump on top of it and start bopping it on the head with your 2H blunt weapon
3) you lay a dragon trap and hope it's in the game or you....ummmm won't be able to lay a dragon trap
4) you cast a burden spell and go to town on it from there
5) you are a good marksman and take it down with arrows
6) you levitate upwards and battle it with sword and/or sorcery
7) you summon a dragon of your own or some other creature and while it has the dragon's aggro you whip it into submission
8) you raise your shield and block it's attack, and either reflect the damage back to the dragon or do a shield bash to stun it and then go at it