document.write( "Question 636895: Find the radius of a circle with these three points: (1,-7) , (-1,-9), and (3,-9) and center (1,-9) \n" ); document.write( "
Algebra.Com's Answer #401309 by Edwin McCravy(20056)\"\" \"About 
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Find the radius of a circle with these three points: (1,-7) , (-1,-9), and (3,-9) and center (1,-9)
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document.write( "We draw those points:\r\n" );
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document.write( "(1,-7) , (-1,-9), and (3,-9) and center (1,-9)\r\n" );
document.write( "We can only draw this circle with that center and going through\r\n" );
document.write( "those points:\r\n" );
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document.write( "So draw in three radii:\r\n" );
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document.write( "Look at the red radius. it goes from -7 down to -9, that's 2 units\r\n" );
document.write( "Look at the green radius, it's also 2 units long, and the blue one\r\n" );
document.write( "is also 2.  So the radius is 2. \r\n" );
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document.write( "Edwin
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