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octagon
oc·ta·gon [ óktə gòn ] (plural oc·ta·gons)


noun 
Definition:
 
eight-sided shape: a two-dimensional geometric figure formed of eight sides and eight angles
[Late 16th century. Via Latin< Greek oktagōnon< oktagōnos "eight-angled" < okto "eight" + < gōnia "angle"]

oc·tag·o·nal [ ok tággən'l ] adjective
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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