document.write( "Question 1012114: In a regular polygon, the exterior angle is one-eighth of an interior angle. How many sides has the polygon? \n" ); document.write( "
Algebra.Com's Answer #628040 by MathTherapy(10552)\"\" \"About 
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\n" ); document.write( "In a regular polygon, the exterior angle is one-eighth of an interior angle. How many sides has the polygon?
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Let one of the exterior angles, be E
\n" ); document.write( "Then one of the interior angles = 8E
\n" ); document.write( "Since both sum to \"180%5Eo\", we get: E + 8E = 180
\n" ); document.write( "9E = 180
\n" ); document.write( "E, or one of the exterior angles = \"180%2F9\", or \"20%5Eo\"
\n" ); document.write( "Since the sum of the exterior angles of a polygon is \"360%5Eo\", and with one exterior
\n" ); document.write( "angle of the REGULAR polygon being \"20%5Eo\", number of sides = \"360%2F20\", or \"highlight_green%2818%29\" \n" ); document.write( "
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