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