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How many sides does a regular octagon have, and what do we know about its sides and angles

I think a octagon has 8 sides
but I don't know about the angles...I'll go and look it up and if I find out I'll post it

I found on wikipedia that it's internal angle's are 135^o

Check this site for informatin about octagons.

http://en.wikipedia.org/wiki/Octagon

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