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The pentadecagon (or pentakaidecagon) is any 15-sided, 15-angled, polygon. All fifteen sides of a pentadecagon are of equal length. Visit wikipedia.org pentadecagon (geometry) for more detailed information about the pentadecagon shape.
Print these math-based pentadecagon shaped ornaments on regular paper or heavy-duty card stock to help teach concepts of geometry in a fun manner.