document.write( "Question 627627: A regular polygon of (2k+1)sides has 140 as the size of each interior angle. Find k \n" ); document.write( "
Algebra.Com's Answer #395148 by richard1234(7193)\"\" \"About 
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Exterior angle = 40 deg\r
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\n" ); document.write( "\n" ); document.write( "# of sides = 360/40 = 9, so 9 = 2k+1, k = 4.
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