What is a shape with 13 faces called?

(triskaidecahedron) Number of faces: 13. Number of edges: 20. Number of vertices: 9.

How many faces does a trapezohedron?

faces. The 3-trapezohedron (trigonal trapezohedron) is a rhombohedron having all six faces congruent.

What is a 16 sided 3D shape called?

Deltahedron — from Wolfram MathWorld.

What is an 18 sided 3D shape called?

octadecagon
In geometry, an octadecagon (or octakaidecagon) or 18-gon is an eighteen-sided polygon….Octadecagon.

Regular octadecagon
Edges and vertices	18
Schläfli symbol	{18}, t{9}
Coxeter–Dynkin diagrams
Symmetry group	Dihedral (D18), order 2×18

What is a 99 sided shape called?

nonacontakainonagon
What is a 99 sided shape called? In geometry, an enneacontagon or enenecontagon or 90-gon is a ninety-sided polygon. Thus, the 99 sided shape is called nonacontakainonagon or enneacontanonagon. Here, enneaconta is the prefix for the number of sides numbered from 90 to 99.

How do you pronounce trapezohedron?

noun, plural tra·pe·zo·he·drons, tra·pe·zo·he·dra [truh-pee-zuh-hee-druh, trap-uh-].

What is the shining Trapezohedron?

The Shining Trapezohedron was a “crazy angled stone” created on the planet Yuggoth and brought to Earth by the Old Ones before the emergence of the human race. It was originally held by the Elder Things, then the serpent-men of Valusia, and eventually the first humans on Lemuria.

What is the name of a 99 sided shape?

What is a trillion sided shape?

A teragon is a polygon with 1 trillion sides, it has a Schläfli symbol .

How do you pronounce pentagonal Trapezohedron?

What is a 10000 sided shape?

myriagon
In geometry, a myriagon or 10000-gon is a polygon with 10,000 sides.

Is there a shape with 1 million sides?

A megagon or 1 000 000-gon is a polygon with 1 million sides (mega-, from the Greek μέγας megas, meaning “great”).

What is a Gigagon?

A gigagon is a two-dimensional polygon with one billion sides. It has the Schläfli symbol.

How do you pronounce Trapezohedron?

What is a deltahedron?

In geometry, a deltahedron ( plural deltahedra) is a polyhedron whose faces are all equilateral triangles. The name is taken from the Greek upper case delta (Δ), which has the shape of an equilateral triangle.

What is a trapezohedron?

In texts describing the crystal habits of minerals, the word trapezohedron is often used for the polyhedron properly known as a deltoidal icositetrahedron .

How many faces does a deltahedron have?

Deltahedron. In geometry, a deltahedron ( plural deltahedra) is a polyhedron whose faces are all equilateral triangles. The name is taken from the Greek majuscule delta ( ), which has the shape of an equilateral triangle. There are infinitely many deltahedra, but of these only eight are convex, having 4, 6, 8, 10, 12, 14, 16 and 20 faces.

What is a rhombohedron?

They are called rhombohedra. They are cubes scaled in the direction of a body diagonal. They are also the parallelepipeds with congruent rhombic faces. A special case of a rhombohedron is one in which the rhombi forming the faces have angles of 60° and 120°. It can be decomposed into two equal regular tetrahedra and a regular octahedron.