# What polyhedron has 8 faces that are triangles?

An octahedron - which is like two rectangular pyramids whose bases have been stuck together.

### Dodecahedron has triangular faces?

A dodecahedron is a polyhedron with 12 faces. There are 6,384,634 topologically distinct convex dodecahedra with 8 or more vertices. A hexagonal bipyramid, a dodecadeltahedron, a triakis tetrahedron are examples of dodecahedra all of whose faces are triangles. There are many more dodecahedra in which some, but not all, faces are triangles.

### 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…

### 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).

### How man faces does 8 edges and 5 vertices have?

If it is a simply connected polyhedron then it is a quadrilateral based pyramid and so has 5 faces. If it is a simply connected polyhedron then it is a quadrilateral based pyramid and so has 5 faces. If it is a simply connected polyhedron then it is a quadrilateral based pyramid and so has 5 faces. If it is a simply connected polyhedron then it is a quadrilateral based pyramid and so has 5…

### If you cut off a squarehow many face egdes and verticies does a the new polyhedron have?

A square is not a polyhedron, it is a polygon. A cube is not a polygon, it is a polyhedron. A square has 4 edges and 4 vertexes. It has no faces because it is not a polyhedron. If you cut the corners off of a square, the new polygon has 8 edges and 8 vertexes. A cube has 6 faces, 12 edges, and 8 vertexes. If you cut the corners off of a cube…

### 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…

### 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…