# What is a polyhedron that has eight faces and has all faces that are equilateral triangles?

octahedron

### What are platonic solids?

Platonic solids are three-dimensional shapes that have equal sides, angles, and faces. There are five Platonic solids. * The tetrahedron is a four-sided polyhedron with four equilateral triangles for faces. It looks like a three-sided pyramid (where the fourth side is the base). * The cube is a six-sided polyhedron with six squares for faces. * The octahedron is an eight-sided polyhedron with eight equilateral triangles for faces. It looks like two four-sided pyramids attached…

### Is a regular polyhedron a pyramid?

There are five regular polyhedra, also known as the Platonic solids. They are three-dimensional shapes where all of the faces are made up of the same regular polygon. They are: Tetrahedron with four faces (this one is like a pyramid, but with an equilateral triangle for the base and all of the faces) Cube with six faces (all squares) Octahedron with eight faces (all equilateral triangles) Dodecahedron with 12 faces (all regular pentagons) Icosahedron with…

### What polyhedron has all equilateral triangles as faces?

look at ask or google to find an answer * * * * * A polyhedron with equilateral triangular faces is called a deltahedron. There are infinitely many of them but only 8 convex ones. The following three are regular: tetrahedron, octahedron and icosahedron. There are 5 more convex polyhedra which are convex but not regular (because they have differing number of faces meeting at their vertices) These are Johnson deltahedra (see link).

### What is a polyhedron with equilateral triangle faces?

It_is_a_triangular_prism.">It_is_a_triangular_prism.">It is a triangular prism. * * * * * While a triangular prism can have equilateral triangle faces, it has more faces that are quadrilateral (or rectangular). A polyhedron with only equilateral triangular faces could be a tetrahedron, an octahedron in the form of a square based dipyramid, or an icosahedron.

### What has 8 congruent equilateral triangles as faces and 6 vertices?

A solid with 8 faces is an octahedron. As all faces are the same it is a regular octahedron. As such it is one of the five platonic solids - the only five 3D objects that can be regular: the tetrahedron (4 equilateral triangles for the faces), the hexahedron (usually called a cube with 6 square faces), the octahedron (as asked, 8 equilateral triangles for the faces), dodecahedron (12 regular pentagons as faces), icosahedron (20…

### What does an octahedron look like?

An octahedron is a polyhedron with eight faces. A regular octahedron can be composed of eight equilateral triangles, four forming each half, and meeting in the middle at a square. Imagine a pyramid, with a square base. Rising up from each edge is an equilateral triangle that meets the other four triangles at the apex. Now, turn the pyramid over and add four more triangles to the other side the same way. You now have…