Problem (Circumcircles and Kites)
Tools: Anything you know (except what you are proving).
Let ABCD be a kite (with |AB| = |AD| and |CB| = |CD|). Which of the following is true?
If (I) or (ii) is true, justify your answer. If (iii) is true, describe all the kites for which there is such a circle and justify your answer.