Relier Pairs Parts of a Circle VocabularyVersion en ligne Vocabulary terms par Sherry Tippett 1 Circle 2 Central Angle 3 Arc 4 Diameter 5 Inscribed Angle 6 Point of Tangency 7 Semicircle 8 Radius 9 Tangent 10 Secant 11 Minor Arc 12 Major Arc 13 Chord A part of a circle named by its endpoints. Half a circle. An arc that is smaller than a semicircle. A segment whose endpoints are on the circle. A segment that contains the center of the circle and whose endpoints are on 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 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. A line in the plane of the circle that intersects the circle in exactly one point. 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 A line, ray, or segment that intersects a circle at two points.