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Unformatted text preview: through the center is called the diameter . The center is the midpoint of every diameter line segment. Equations of Circles Assume that the circle has a center at ) , ( k h and a radius equal to r . 1. General Form: 2 2 # &quot; &quot; &quot; &quot; F Ey Dx y x 2. Standard Form: 2 2 2 ) ( ) ( r k y h x # ! &quot; ! Use completing the square to convert from general form to standard form. ! Example 3 Given the equation 16 ) 2 ( ) 1 ( 2 2 # ! &quot; &quot; y x , find the center and radius. Sketch the graph. &quot; ! Example 5 Given the equation of the circle 4 6 12 2 2 # ! ! &quot; &quot; y x y x , find the center and radius. &quot;...
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