A 12 sided shape is called a dodecagon. Please see the related links for details.
A 12 sided 3D shape is a dodecahedron.
A 12 sided polygon is called a dodecagon.
Parallelogram
Icosahedron
A 12 sided shape is called a dodecagon. Please see the related links for details.
An irregular do-decagon
An irregular dodecagon.
It's called a dodecagon or a duodecagon.
hendecagon and dodecagon (repectively).
you call a seven sided shape a heptagon.
a 12 sided shape.
A 12 sided 3D shape is a dodecahedron.
An 11 sided shape is an Eptogon
12-sided two dimensional shape: dodecagon12-sided three dimensional shape: dodecahedron
A 12 sided 3D shape is called a dodecahedron.
A 30 sided shape is called a Triacontagon.