document.write( "Question 831482: An octagon has angles that measure 140°, 140°, 130°, 130°, 150°, 145°, 115°, and d. What is d? \n" ); document.write( "

Algebra.Com's Answer #501402 by KMST(5328) $\"\"$ $\"About$

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The measures of the interior angles of any polygon with $\"n\"$ sides add up to
\n" ); document.write( " $\"%28n-2%29%2A180%5Eo\"$ .
\n" ); document.write( "An octagon has $\"8\"$ sides.
\n" ); document.write( "The measures of the interior angles of any octagon add up to
\n" ); document.write( " $\"%288-2%29%2A180%5Eo=6%2A180%5Eo=1080%5Eo\"$
\n" ); document.write( "So,
\n" ); document.write( " $\"140%5Eo%2B1400%5Eo%2B1300%5Eo%2B1300%5Eo%2B1500%5Eo%2B1450%5Eo%2B1150%5Eo%2Bd=1080%5Eo\"$
\n" ); document.write( " $\"950%5Eo%2Bd=1080%5Eo\"$
\n" ); document.write( " $\"d=1080%5Eo-950%5Eo\"$
\n" ); document.write( " $\"highlight%28d=130%5Eo%29\"$ \n" ); document.write( "

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