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pentadecagon
[pen-t
uh
-
dek
-
uh
-gon, -g
uh
n]
Word Origin
noun
Geometry
.
a polygon having 15 angles and 15 sides.
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Origin of
pentadecagon
penta-
+
decagon
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
