Matching Pairs Parts of a Circle VocabularyOnline version Vocabulary terms by Sherry Tippett 1 Arc 2 Semicircle 3 Chord 4 Minor Arc 5 Secant 6 Radius 7 Circle 8 Diameter 9 Major Arc 10 Point of Tangency 11 Inscribed Angle 12 Tangent 13 Central Angle 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. An arc that is larger than a semicircle. An arc that is smaller than a semicircle. An angle whose vertex is on the circle and the sides of the angle are chords of the circle. A line, ray, or segment that intersects a circle at two points. A segment whose endpoints are on the circle. A unique point at which a tangent line meets 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 part of a circle named by its endpoints. Half a circle. The set of all points in a plane that are a given distance, the radius, from a given point, the center.
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