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