Question

Circles having equations x2 + y2 = 52 and x2 + y2 = 10 are congruent circles.
True
False

Answer 1

they are concentric circles ... never heard of congruent circles

Answer 2

so false

Answer 3

don't know ... i guess it should be false. concentric means same center. congruent in terms of triangle means exactly same triangle.
never heard congruent in terms of circle. by using logic .. it must be false.