My Definition

Key Characteristics

The following are true of a circle:

  • It is a set of points in a plane that are equidistant from a fixed point that is called the center.

  • It represents the base of a cylinder or cone.


Use the link below to further study examples of a circle.

Circle Activity


Images of three shapes: a cylinder, a semicircle, and a curved line.

TEKS: K(6)(A), 1(6)(C), 1(6)(D), 7(5)(B), 7(8)(C), 7(9)(B), G(5)(A), G(11)(B), G(12)(A), G(12)(B), G(12)(C), G(12)(D), G(12)(E)