**TI83F* AppVariable file 12/24/08, 18:48P+ ?+GLGE10?+=+nav 9AE51D1EC13445C5B24A00CF0B737DCFGLGE10.9GLGE101   adjacent arcsFadjacent arcs:Arcs in a circle that have exactly one point in common. arc 9arc:A part of a circle that is defined by two endpoints. center!~center:The given point from which all points on a circle are the same distance. In the figure, P is the center of the circle.  central angle!central angle:An angle whose vertex is the center of a circle and whose sides intersect the circle. In the figure, MTD is a central angle of circle T. chord(!Tchord:A segment whose endpoints are on a circle. In the figure, seg. JR is a chord.  chord segmentLchord segment:Segments that form when two chords intersect inside a circle. circle!icircle:The set of all points in a plane that are the same distance from a given point called the center.  circumference,circumference:The distance around a circle.   circumscribed'!pcircumscribed:A circle is circumscribed about a polygon if the circle contains all the vertices of the polygon.  common tangentScommon tangent:A line or segment that is tangent to two circles in the same plane.  compound locusQcompound locus:A locus or set of points which satisfies more than one condition.  concentric circles:concentric circles:Coplanar circles with the same center.  congruent arcs[congruent arcs:Arcs in the same circle or in congruent circles that have the same measure. congruent circles9congruent circles:Two circles that have congruent radii. diameter !ldiameter:The distance across a circle through its center. In the figure, seg. TG is a diameter of circle K. external secant segment!Rexternal secant segment:A secant segment that lies in the exterior of the circle. external segmentBexternal segment:A segment that lies in the exterior of a circle.  inscribedV#!Xinscribed:A polygon is inscribed in a circle if each of its vertices lie on the circle. inscribed angle!dinscribed angle:An angle that has a vertex on a circle and sides that contain chords of the circle. intercepted arc~intercepted arc:An arc that has endpoints on the sides of an inscribed angle and lies in the interior of the inscribed angle.  major arcm!Zmajor arc:An arc with a measure greater than 180. In the figure, arc ACB is a major arc.  minor arcm!Vminor arc:An arc with a measure less than 180. In the figure, arc AB is a minor arc. pi ()pi ():The ratio of the circumference of a circle to its diameter. The Greek letter represents this number. The value of pi is 3.1415926... . Approximations for pi are 3.14 and 22/7 . point of tangencylpoint of tangency:For a line that intersects a circle in only one point, the point at which they intersect. radius>!Lradius:The distance from the center of a circle to any point on the circle. secant%!fsecant:A line that intersects a circle in two points. In the figure, line CD is a secant of circle P. secant segmentWsecant segment:A segment of a secant line that has exactly one endpoint on the circle.  semicircleMsemicircle:Congruent arcs whose endpoints lie on the diameter of the circle. tangenttangent:A line in the plane of a circle that intersects the circle in exactly one point. The point of intersection is called the point of tangency. tangent segmentrtangent segment:A segment of a tangent with one endpoint on a circle that is both the exterior and whole segment.8`80@00@@@@ P`  a @   < <  I >%)J %)I "2 @@@@00@088`x0@   @@  p>H>p>@@  @@    @0x8`> |`A! !p  x  pt?<84>! ! |A  ` >?( !!K!" I(!"I QҔ @TVd2)PUeH)PPEDXU5h@8`x<  `p H(?p(?HH0  !@ 0@@ 88 $:(`0`($@ @#@ 0> 0,"H **x *"H *H? !"&FS1He*(E)F28` 0 @!"$@@  @@@  `@@ @ @G @ 0 8`~A  0 @@  @@@@@@@@    DD@ld TT0TLDD> D@@8pAd122DHTPD(TTpLHD(TD@DP4T8H8`80@  @@@@ pHp@@ < <8p  p  @@@  8,À@`088`|p< ` @@` @D`@E@F@DH@P <`