A polyhedron with 20 faces is called an icosahedron.
A one-hundred sided polyhedron is called a hecatohedron, comming from the Greek Hecto- meaning one-hundred and -hedronmeaning a three-dimensional figure.
Octohedron
I believe it called a Bucky Ball. After Buckminster Fuller.
There is no name for a five sided regular polygon. A five sided polyhedron is called a pentahedron.
A polyhedron with 20 faces is called an icosahedron.
nonahedron
An octahedron, which looks like 2 pyramids glued bottom to bottom.
A one-hundred sided polyhedron is called a hecatohedron, comming from the Greek Hecto- meaning one-hundred and -hedronmeaning a three-dimensional figure.
A 20-sided polyhedron is called an icosahedron. It has 20 equilateral triangle faces, 30 edges, and 12 vertices. It is a regular convex polyhedron with rotational symmetry.
Octohedron
I believe it called a Bucky Ball. After Buckminster Fuller.
There is no name for a five sided regular polygon. A five sided polyhedron is called a pentahedron.
The name of a 400 sided polygon is Tetrhectagon.
a polyhedron (if the shape is 3 dimensional) a polygon if it is a planar shape.
A 120-sided polyhedron is a hecatonicosahedron.
yourmomagon