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Circle Vocabulary
Definition of terms
| Term | Definition |
|---|---|
| Chord | A segment whose endpoints lie on a circle |
| Diameter | A chord that contains the center of a circle |
| Secant Of A Circle | A line that contains a chord |
| Tangent To A Circle | A line that lies in the plane of a circle and that intersects the circle at exactly one point |
| Circle | The set of all points in a plane |
| Radius | A segment from a point to another |
| Congruent Circles | Circles with the same radius |
| Concentric Circles | Circles that lie in the same plane |
| Inscribed Angle | Angle whose vertex lies on a circle |
| Central Angle | Angle whose vertex is the center |
| Circumference | distance around a circle |
| Arc Length | a fraction of the circumference of a circle defined by the arc |
| Arc of a circle | two points on a circle |
| Semicircle | an arc of a circle whose endpoints are the end |
| Minor Arc | a circle whose length is less then the length |
| Major Arc | a circle whose length is greater than the length |