A 2D seven sided figure is called a heptagon. A 3D seven faced polygon is called a heptahedron.
A triangular dipyramid.
A dodecahedron.
A five sided 3d shape is called a pentehedron
It's a pentagonal prism or a hexagonal pyramid. (maybe there are other answers)
3d shapes with six faces are called hexahedra.
A 2D seven sided figure is called a heptagon. A 3D seven faced polygon is called a heptahedron.
A triangular dipyramid.
Dodecahedron
A dodecahedron.
A 12 sided 3D shape is called a dodecahedron.
A five sided 3d shape is called a pentehedron
pentagonal pyramid
It's a pentagonal prism or a hexagonal pyramid. (maybe there are other answers)
An 11-sided 3D shape is a hendecahedron.
I believe it is tridecahedron.
a 4 sided 3d shape is called a triangular prism!!!!!!!!!!!!!!!