A rotation can be thought of as a turn.
You just generated a translation by reflecting a figure across two lines, then you generated a rotation by reflecting a figure across two lines. What attribute of the two lines will determine if the double-reflection generates a translation or a rotation? (Hint: look at the relationship between the two lines.)
For the two lines that generate a rotation, how does the point of intersection compare to the center of rotation? Do you think that is the case for every double-reflection that generates a rotation? How could you test your conjecture?