How are the Aristotelean principles of tragedy employed in 'Oedipus Rex' and 'Oedipus at Colonus' and 'Antigone'?
Some of the principles of tragedy as identified by Aristotle
[384 B.C.E.* - 322 B.C.E.] may be found in the plays by the
playwright Sophocles [496 B.C.E. - 406 B.C.E.]. In the case of the
surviving Theban cycle, the ending is unhappy for at least
one main character in 'Antigone', 'Oedipus at Colonus', and
'Oedipus Rex'. In the beginning of all three plays, the
misfortune appears preventable. But as the plot develops,
the miserable outcome takes on the appearance of
inevitability. And in each of the three cases, the
inevitability springs from at least one tragic flaw in the
main, heroic character.
*Before the Christian Era