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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 |