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Circle vocab
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 (point of tangency) |
Circle | The set of all points in a points in a plane at a given distance from a given point in the plane. |
Radius | A segment from a point on a circle or a sphere to the center |
Congruent Circles | Circles with the same radius. |
Concentric Circles | Circles that lie in the same plane that share the same center. |
Inscribed Angle | Angle whose vertex lies on a circle and whose sides contain chords of the circle. |
Central angle | Angle Whose vertex is the center of a circle and whose sides contain radii of the circle. |
Circumference | Distance around a circle, that is, the perimeter of 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 and the continuous part of the circle between of the two points. |
Semicircle | An arc of a circle whose endpoints are the endpoints of a diameter. |
Minor Arc | An arc of a circle whose length is less than than the length of a semicircle of the circle |
Major Arc q | An arc of a circle whose length is greater then the length of a semicircle of the circle. |