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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.

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Related Questions

3d shapes what shape has some triangular faces?

they are: ---sided pyramids and triangular prisms and 20 sided 3d shapes


3d shapes- this shape has some triangular faces?

PYRAMID


What 3d shapes has 4 faces?

a triangular pyramid


What are two 3d shapes that have all congruent faces?

triangular pyramid and cube.


How many 3d shapes have 4 faces?

Just one: a tetrahedron or triangular pyramid.


What 3d shapes have 1 more vertex than faces?

A triangular prism, which has 6 vertices and 5 faces.


Which 3D shapes has five faces?

Triangular prism is one and another one is the rectangular prism


Faces and vertices of all 3D shapes?

There are an infinite number of 3d shapes. For example you can have an infinite number of prisms with ends that are triangular, quadrilateral, or in the shape of any polygon.


How many triangular faces are in triangular prism?

There are no triangular prisms in faces. Faces are 2-d shapes and these cannot contain 3-d shapes in them.


What are the shapes of the faces of the faces of a triangular prism?

A triangular prism has three rectangular faces and two triangular faces.


How many shapes of faces does a triangular pyramid has?

A triangular pyramid has four triangular faces.


How many regular 3d shapes are there?

There are five Platonic solids: Tetrahedron (or triangular pyramid): 4 triangular faces Cube: 6 square faces Octahedron: 8 triangular faces Dodecahedron: 12 pentagonal faces Icosahedron: 20 triangular faces. Although not a Platonic solid, some people consider a sphere to be a regular 3d shape.