Concentric circles.
Concentric circles have the same center. They are not necessarily the same size. If two concentric circles have the same area, then they are congruent, meaning they coincide when superimposed.
They are said to be concentric circles.
congruent circles
Two concentric circles sharing the same center.
Concentric circles.
Concentric circles.
The circles are "concentric".
They are concentric.
concentric circles
concentric circle
Concentric circles are the circles with the same center therefore they do not cross with each other as the "center is not considered a point on the circle". An exception would be two circles that are concentric and have the same radius, in which case the circles are indistinct and every point of the circles is an intersection.
concentric
concentric
Concentric circles have the same center. They are not necessarily the same size. If two concentric circles have the same area, then they are congruent, meaning they coincide when superimposed.
They are said to be concentric circles.
Difficult to tell since there is nothing following. My guess is concentric, but that does not require the circles to be coplanar.