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10-7 Special Segments in a Circle

10-7 Special Segments in a Circle - = = = = x x x x Theorem...

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Special Segments Special Segments in a Circle in a Circle Section 10-7
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Theorem 10.15 Theorem 10.15 If 2 chords intersect in a circle, then the products of the measures of the segments of the chords are equal. x y r t rt xy =
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Theorem 10.16 Theorem 10.16 If 2 secant segments are drawn to a circle from an exterior point, then the product of the measures of one secant segment and its external secant segment is equal to the product of the measures of the other secant segment and its external secant segments.
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x 3 6 2 4 12 3 ) 2 )( 6 ( ) 3 )( ( = = = x x x 3 7 7 3 16 9 3 ) 2 )( 8 ( ) 3 )( 3
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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 reptile’s favorite movie? The Lizard of Oz What do you get when you cross an elephant and Darth Vader? An elevader...
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