Is List of polygons up to twelve?

3 sides-triangle 4 sides-square or rectangle(square can be a rectangle, but rectangle can't be a square) 5 sides-pentagon 6 sides-hexagon 7 sides-heptagon 8 sides-octagon 9 sides-nonagon 10 sides-decagon 11 sides-hendecagon 12 sides-dodecagon Actually, there are more, but the names get really long and after twelve, most people say 13-gon, 14-gon, 15-gon...