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