A dodecagon or dudecagon are both acceptable terms
you call a two dimensional shape with six sides a hexagon
A shape with 8 sides is an octagon.
Triangle is a shape with three sides.
A shape with straight sides is called a polygon. But it can have 3 or 4 sides as well.
A shape with 5 sides is a pentagon
A shape with 7 sides is a heptagon
A TRIGON , more usually a 'Triangle'.
you call a two dimensional shape with six sides a hexagon
A shape with 8 sides is an octagon.
Triangle is a shape with three sides.
A regular shape.
a shape with nine sides is called nonagon
It is an irregular shape
A shape with straight sides is called a polygon. But it can have 3 or 4 sides as well.
A shape with 5 sides is a pentagon
An Octagon.
An octagon.