Arc
Semicircle
Major Arc
Diameter
Secant
Chord
Minor Arc
Inscribed Angle
Point of Tangency
Circle
Tangent
Radius
Central Angle
A line, ray, or segment that intersects a circle at two points.
A segment that contains the center of the circle and whose endpoints are on the circle.
A part of a circle named by its endpoints.
Any segment with one endpoint on the circle and the other endpoint at the center of the circle.
An angle whose vertex is on the circle and the sides of the angle are chords of the circle.
An arc that is larger than a semicircle.
An angle formed by two radii with the vertex at the center of the circle.
Half a circle.
An arc that is smaller than a semicircle.
A segment whose endpoints are on the circle.
A line in the plane of the circle that intersects the circle in exactly one point.
The set of all points in a plane that are a given distance, the radius, from a given point, the center.
A unique point at which a tangent line meets the circle