Circles and Circumference

Special Segments in the Circle Radii Radius

Special Segments in the Circle Diameter Chord

Special Segments in the Circle B Diameter Radius Chord C P E D

Special Segments in the Circle Radius A segment with endpoints that are at the center and on the circle Chord A segment with endpoints on the circle

Special Segments in the Circle Diameter chord that passes through the circle’s center and made up of collinear radii For a circle that has radius r and diameter d

Circle Pairs Congruent Circles K H J G

Circle Pairs Tow Circles are Congruent Circles if and only if they have congruent radii

Circle Pairs Concentric Circles C B A

Concentric Circles are coplanar circles that have the same center Circle Pairs Concentric Circles are coplanar circles that have the same center

Circumference r d