No. Circles of different sizes are similar, but not congruent.
Circles that have congruent radii. Congruent=coinciding at all points when superimposed (http://dictionary.reference.com/browse/congruent)
Are congruent circles.
Figures that have all sides congruent are squares. Congruent shapes have the same size and the same shape. Circles can be congruent if they have the same radius.
No. There are big ones, medium ones, and little bitty ones.But all circles are similar.
Circles with the same radius are congruent circles.
What the word congruent and circle have in common is that circles have a congruent radii. All of the radii in a single circle is congruent to each other.
Yes providing they have the same cicumference
Yes, it is. Circles that are in the same plane and having the same center are called congruent circles.