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A segment whose endpoints lie on a circle Chord
A chord that contains the center of a circle Diameter
A line that contains a chord Secant of a Circle
A line that lies in the plane of a circle and that intersects the circle at exactly one point (Point of tangency) Tangent of a Circle
The set of all points in a plane at a given distance from a given point in the plane Circle
A segment from a point on a circle or a sphere to the center Radius
Circles with the same radius Congruent Circles
Circles that lie in the same plane that shared the same center Concentric Circles
Angle whose vertex lies on a circle and whose sides contain chords of the circle Inscribed Angle
Angle whose vertex is the center of a circle and whose sides contain radii of the circle Central Angle
Distance around a circle, that is, the perimeter of a circle Circumference
A fraction of the circumference of a circle defined by the arc Arc Length
Two points on a circle and the continuous part of the circle between the two points Arc of a Circle
An arc of a circle whose endpoints are the endpoints of a diameter Semicircle
An arc of a circle whose length is less than the length of a semicircle of the circle Minor Arc
An arc of a circle whose length is greater than the length of a semicircle of the circle Major Arc
Created by: Flavor