document.write( "Question 1153443: What is the size of one decagon exterior angle?
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Algebra.Com's Answer #775651 by Alan3354(69443)\"\" \"About 
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What is the size of one decagon exterior angle?
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\n" ); document.write( "Depends.
\n" ); document.write( "If it's a regular decagon, all angles equal:
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\n" ); document.write( "The sum of the exterior angles of a plane figure is 360 degrees.
\n" ); document.write( "360/10 = 36 degrees.
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\n" ); document.write( "If it's not a regular decagon, there's no way to know.
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