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September 2, 2014

September 2, 2014

Posted by **Ruth** on Friday, September 13, 2013 at 11:29pm.

- Algebra -
**Reiny**, Saturday, September 14, 2013 at 12:03amThe sum of the interior angles of a regular n-gon

= 180(n-2)

so for a pentagon, the sum is

180(3) = 540°

which makes each angle 540/5 or 108°

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