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Parts of a Circle
| Term | Definition |
|---|---|
| Circle | Set of points in a plane equidistant from a given point. |
| Center of a Circle | The middle point equidistant to every point. |
| Radius | Segment withe endpoints at the center of the circle and on the circle. |
| Chord | Segment with endpoints on a circle, connected to one another. |
| Diameter | A chord that passes through the center. |
| Radius Formula | Diameter/2 (diameter divided by 2) |
| Diameter Formula | Radiusx2 (radius times 2) |
| Congruent Circles | Congruent radii in two circles. |
| Concentric Circles | Coplanar circles with the same circle |