Match the vocabulary word with the correct definition.

1. diameter of a sphere
the intersection of a sphere and a plane containing the center of the sphere
2. congruent spheres
a segment passing through the center with endpoints on the sphere
3. radius of sphere
the set of all points that are the same distance from a given point
4. circle
a segment with endpoints at the center of the sphere and a point on the sphere
5. great circle
spheres that have equal radii
6. small circle
the intersection of a sphere and a plane not containing the center of the sphere
7. sphere
the set of all points in a plane that are at a given distance from a given point in the plane