document.write( "Question 1118573: The interior angle sum of the polygon is 1440° . Find the number of right angles in the polygon \n" ); document.write( "

Algebra.Com's Answer #733942 by greenestamps(13200) $\"\"$ $\"About$

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\n" ); document.write( "The question can't be answered. Given the interior angle sum, we know the number of sides of the polygon, and therefore the number of angles -- but we know nothing about how many of them are right angles.

\n" ); document.write( "So I will guess that the question was to find the number of angles, not the number of right angles.

\n" ); document.write( "I think the easiest way to get from the interior angle sum to the number of sides/angles is to add the 360 degree sum of the exterior angles; then, since the sum of each interior and corresponding exterior angle is 180 degrees, divide the resulting total by 180:

\n" ); document.write( " $\"1440%2B360+=+1800\"$
\n" ); document.write( " $\"1800%2F180+=+10\"$

\n" ); document.write( "The polygon has 10 sides and 10 angles. \n" ); document.write( "

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