Math
posted by Tyler .
How big is each interior angle in a regular decagon? would this be 4.4 (144/10)?
How big is each exterior angle of a regular decagon?
Is this 36? (360/10)

Isnt there a theorem that the sum of the interior angles is
180(n2), so then each interior angle of a regular ngon would be\
180(n2)/n 
Each angle measures 144 degrees.
http://www.coolmath.com/reference/polygons.html
(Broken Link Removed)
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