A pentadecagon has 15 sides. (the prefixes pent=5, and deca=10)
Chat with our AI personalities
pentadecagon
Pentadecagon, Quindecagon, PentakaidecagonA polygon with fifteen sides can be called a pentadecagon.
a pentadecagon
The name of a polygon with 15 sides is a pentadecagon
A fifteen sides polygon is called a pentadecagon.