A 20-sided polyhedron is an icosahedron. A 20-sided polygon is an icosagon.
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 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.
A 20-sided polyhedron is an icosahedron. A 20-sided polygon is an icosagon.
Icos- Icosagon - 20 sided polygon Icosahedron - 20-faced polyhedron
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.
Octohedron
I believe it called a Bucky Ball. After Buckminster Fuller.
icosahedron (its a 20 sided trinagular faced polyhedron)
There is no name for a five sided regular polygon. A five sided polyhedron is called a pentahedron.
an icosahedron (icosagon) is a regular polyhedron with 20 identical equilateral triangular faces
icosahedron