document.write( "Question 600309: Find the measure of one exterior angle of a regular polygon that has 21 sides. Round your answer to one decimal place. \n" ); document.write( "

Algebra.Com's Answer #379323 by w_parminder(53) $\"\"$ $\"About$

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To find the exterior angle of a regular polygon with 'n' sides, simply divide 360 by n
\n" ); document.write( "i.e. 360/n\r
\n" ); document.write( "\n" ); document.write( "In this case, the measure of the angle is 360/21
\n" ); document.write( "i.e. 17.1 (approximately)\r
\n" ); document.write( "\n" ); document.write( "To find the interior angle, subtract the exterior angle from 180, OR use the formula
\n" ); document.write( "Measure of interior angle of a regular polygon with 'n' sides = 180* $\"%28+1-2%2Fn+%29\"$ \r
\n" ); document.write( "\n" ); document.write( "In this case, the interior angle = 180 - 17.1 = 162.9 (approximately) \n" ); document.write( "

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