document.write( "Question 268944: What is the measure of a vertex angle in a regular polygon with 9 sides? \r
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Algebra.Com's Answer #197040 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! What is the measure of a vertex angle in a regular polygon with 9 sides? \n" ); document.write( "--------------- \n" ); document.write( "The sum of the exterior angles is 360 for all polygons. \n" ); document.write( "360/9 = 40 degs \n" ); document.write( "Interior angles = 180-40 = 140 degs each \n" ); document.write( " \n" ); document.write( " |