Consider a circle or congruent circles, and explain why each statement is true:
a) Congruent arcs have congruent central angles.
b) Congruent central angles have congruent arcs.
c) Congruent chords have congruent arcs.
d) Congruent areas have congruent chords.
e) Congruent central angles have congruent chords.
f) Congruent chords have congruent central angles.