icosahedron
a 4 sided 3d shape is called a triangular prism!!!!!!!!!!!!!!!
Heptrahedron
Triangular Pyramid.
A five sided 3d shape is called a pentehedron
A triangular dipyramid.
A 12 sided 3D shape is called a dodecahedron.
An 11-sided 3D shape is a hendecahedron.
the name of a 20 sided 3d shape is called a icosahedron
a 4 sided 3d shape is called a triangular prism!!!!!!!!!!!!!!!
HEXADECAHEDRON is the correct name for a 16 sided 3D object
tetrahedron
Octadecadron
tricotakaidihedron*
Triskaidecahedron
It is called Triacontakaitetrahedron.
Heptrahedron
Dodecagon :)