document.write( "Question 317532: How many sides does a regular polygon have if one exterior angle is 90 degrees? \n" ); document.write( "

Algebra.Com's Answer #227407 by Edwin McCravy(20056) $\"\"$ $\"About$

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The sum of the exterior angles of any polygon is 360°. Suppose the
\n" ); document.write( "polygon has n sides. Since it is regular, all n exterior angles have
\n" ); document.write( "the same measure, so $\"%2290%B0%22n=%22360%B0%22\"$ , so $\"n=%22360%B0%22%2F%2290%B0%22=4\"$
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document.write( "It's a 4-sided regular polygon, so it's a square!:\r\n" );
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document.write( "Edwin

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