Match the vocabulary word with the correct definition.

1. circle
a chord of a circle that contains the center of the circle
2. diameter
a segment joining the center of a circle to a point of the circle
3. congruent circles
the set of all points in a plane that are at a given distance from a given point in the plane
4. concentric circles
circles that have equal radii
5. radius
two or more circles that lie in the same plane an have the same center

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