Answer:

1. Circles are congruent if their radii are congruent.
2. The minor arc is equal to the measure of its central angle of a circle which intercepts the arc.
3. The sum of the measures of the central angle of a circle with no common interior points is 360.
4. A major arc is equal to 360 minus the measure of the minor arc or central angle.
5. The measure of central angle is congruent to its intercepted arc.

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