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Unit 3- C&S
Unit 3, Circles and Spheres, Accelerated Math 1
Question | Answer |
---|---|
Center | A given point from which a circle is drawn |
Circle | The set of all points equidistant from a specific point |
Radius | (1/2 the diameter) a segment whose endpoints are the center and any point on the circle |
Chord | A segment whose endpoints are in a circle |
Diameter | (2x the radius) A chord that contains the center of a circle |
Secant | a line that intersects a circle in 2 points |
Tangent | a line, ray, or segment that intersects a circle in exactly 1 point, called the point of tangency |
Central angle | an angle whose vertex is the center of a circle |
Arc | an unbroken part of a circle |
Semicircle | an arc whose endpoints are the endpoints of the diameter. |
Minor angle | an arc made by a central angle -180 degrees |
Major angle | an arc made by a central angle 180+ degrees |
Congruent Circles | Circles with congruent radii |
Congruent arcs | 2 arcs that have the same measure and are arcs of the same circle or of congruent circles. |
Inscribed angle | an angle whose vertex is on a circle and whose sides contains chords of the circle |
Intercepted arc | an arc that lies in the interior of an inscribed angle and has endpoints on the angle. |
Inscribed polygon | a polygon in which all vertices lie on an angle |
Circumscribed circle | a circle that contains an inscribed polygon |