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Arc A part of a circle that is defined by two endpoints.
Central Angle An angle that intersects a circle in two points and has its vertex at the center of the circle.
Chord For a given circle,a segment with endpoints that are on the circle.
Circle The locus of all points in a plane equidistant from a given point called the center of the ______.
Circumference The distance around a circle.
Circumscribed A circle is ______ about a polygon if the circle contains all the vertices of the polygon.
Diameter In a circle,a chord that passes through the center of the circle.
Inscribed A polygon is _____ Ina circle if each of its vertices lie on the circle.
Intercepted An angle ____ an arc if the endpoints of the arc lie on the angle, all points of the arc except the endpoints are in the interior of the circle, and each side of the angle contains an endpoint of the arc.
Major arc An arc with a measure greater than 180.
Minor arc An arc with a measure less than 180.
pi An irrational # represented by the ratio of the circumference of a circle to the diameter of the circle.
point of tangency For a line that intersects a circle in only one point the point at which they intersect.
Created by: amstanhope