That is a pentadecagon (or quindecagon or pentakaidecagon.) I doubt anyone would argue with 15-gon, though.
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.
It is a shape with fifteen sides. It goes on to hexdecahedron, sepdecahedron, octdecahedron, nondecahedron, and then I don't know.
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.
It is a shape with fifteen sides. It goes on to hexdecahedron, sepdecahedron, octdecahedron, nondecahedron, and then I don't know.
A shape with 5 sides is a pentagon
An Octagon.