IT has 15 sides
A Pentadecagon had 15 sides
A pentadecagon has 15 sides. (the prefixes pent=5, and deca=10)15
pentadecagon
A pentadecagon
A pentadecagon, which has 15 sides, can be analyzed for parallel lines by considering the sides. Each pair of opposite sides in a regular pentadecagon can be seen as parallel. Since there are 15 sides, the number of pairs of parallel sides is given by the formula ( \frac{n}{2} ) where ( n ) is the number of sides. Therefore, a regular pentadecagon has 7 pairs of parallel lines.
Pentadecagon, Quindecagon, PentakaidecagonA polygon with fifteen sides can be called a pentadecagon.
pentadecagon
A Pentadecagon.
pentadecagon
Pentakaidecagon or Pentadecagon
a pentadecagon
The name of a polygon with 15 sides is a pentadecagon