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