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Unformatted text preview: ( = = = + = + x x x x Theorem 10.17 Theorem 10.17 If a tangent segment and a secant segment are drawn to a circle from an exterior point, then the square of the measure of the tangent segment is equal to the product of the measures of the secant segment and its external secant segment. x 8 2 5 2 20 20 ) 2 )( 10 ( 2 2 = = = = x x x x Joke Time Joke Time What is a reptiles favorite movie? The Lizard of Oz What do you get when you cross an elephant and Darth Vader? An elevader...
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 Fall '10
 Towns
 Geometry, Chords

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