English
Pronunciation
IPA|/�p�nt��d�k�g�n/
Noun
en-noun
- a polygon with fifteen sides
#:*2003: In � O, draw chord AB equal to r. Draw chord AC equal to Vt (which is the side of a regular decagon). CB is now one side of the regular pentadecagon. � Steven Atiyah, Essentials of Geometry (Trafford 2003, p. 357)
ru:pentadecagon
vi:pentadecagon
zh:pentadecagon
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