Tridecagon. A 13-sided polygon, sometimes also called the triskaidecagon.

What polygons have 13 sides?

In geometry, a tridecagon or triskaidecagon or 13-gon is a thirteen-sided polygon.

How many degrees is a polygon with 13 sides?

1980/13=152.3 degrees approx.

In geometry, a pentadecagon or pentakaidecagon or 15-gon is a fifteen-sided polygon.