Hamster Wheel

I was feeding my hamster and noticed the wheel that she runs on. On the wheel are two steel segments that are running through the circle. These segments are both congruent and are both the diameter of the wheel. Since the chords of the circle (the diameter) are congruent this displays Theorem 9-4, which is that congruent chords have congruent arcs. Both the arcs share the same central angle which also prove that the arcs would be congruent. (~AV5)