Hendecagon.
A shape with 11 sides and angles is called an 11-gon, or a hendecagon.
a heptagon is a shape with 11 sides!
dodecagon * * * * * NO! That is 12 sides. 11 sides is a hendecagon.
A shape with 7 sides is a heptagon
A shape with three sides is a triangle.
you call a two dimensional shape with six sides a hexagon
Hendecagon has 11 sides
A shape that has 11 sides is called a hendecagon.
Triangle is a shape with three sides.
A shape with 8 sides is an octagon.
A regular shape.