[list=1][*]Point E is the midpoint of chord CD.[/*][*]Drag the endpoints of diameter AB so that it passes through the midpoint of chord CD (point E).[/*][*]Do this in a variety of ways by changing both chord CD and by moving diameter AB (use A to spin the diameter).[/*][*]What do you notice when the diameter of the circle goes through the midpoint of a chord?[/*][/list]