Posted by **Tyler** on Wednesday, April 16, 2008 at 6:01pm.

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)

- Math -
**bobpursley**, Wednesday, April 16, 2008 at 6:09pm
Isnt there a theorem that the sum of the interior angles is

180(n-2), so then each interior angle of a regular n-gon would be\

180(n-2)/n

- Math -
**Ms. Sue**, Wednesday, April 16, 2008 at 6:09pm
Each angle measures 144 degrees.

http://www.coolmath.com/reference/polygons.html

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