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circleterminologyOpt

# circleterminologyOpt - is on a circle and whose sides are...

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G E O M E T R Y Circle Terminology 100’s of free ppt’s from www.pptpoint.com library

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Radius (or Radii for plural) The segment joining the center of a circle to a point on the circle. Example: OA O A
Diameter A chord that passes through the center of a circle. Example: AB O A B

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Chord A segment joining two points on a circle Example: AB B C A
Chord A segment joining two points on a circle Example: AB B C A

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Secant A line that intersects the circle at exactly two points. Example: AB D C B A O
Secant A line that intersects the circle at exactly two points. Example: AB D C B A O

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Tangent A line that intersects a circle at exactly one point. Example: AB C B A
Central Angle An angle whose vertex is at the center of a circle. Example: Angle ABC A B C

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Inscribed Angle An angle whose vertex

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Unformatted text preview: is on a circle and whose sides are determined by two chords. • Example: Angle ABC A B C Arc • A figure consisting of two points on a circle and all the points on the circle needed to connect them by a single path. • Example: arc AB A B Intercepted Arc • An arc that lies in the interior of an inscribed angle. • Example: arc AC A B C Two Intercepted Arc • If angle is inside the circle. • Example: arc AC arc DF B F A D C • If angle is outside the circle. • Example: arc DE arc DC Two Intercepted Arc E D B A C Investigating Measures of Angles Related to a Circle • Click on GSP 4.00 on the desktop. • Follow the instructions on the handout....
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circleterminologyOpt - is on a circle and whose sides are...

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