Similar, in most instances. All their interior angles add to 360 (without exception), however, the measure of the diameter, perimeter (etc) could be different.
Chat with our AI personalities
Circles that have congruent radii. Congruent=coinciding at all points when superimposed (http://dictionary.reference.com/browse/congruent)
Circles with the same radius are congruent circles.
Congruent arcs are circle segments that have the same angle measure and are in the same or congruent circles.
Congruent circles, maybe...
Congruent Arcs