triangular prism
An octahedron
A 3D shape with all triangular faces can be a tetrahedron pyramid.
No. I has 3 triangle faces and one square face.
A polyhedron is a simply connected 3-dimensional shape whose faces are all regular polygons. A hexagonal pyramid is a special case in which one face is a hexagon and six faces are triangles.
4 faces are triangles and 1 face is a square the square face is the base of the pyramid
triangular prism
An octahedron
A 3D shape with all triangular faces can be a tetrahedron pyramid.
A triangle based pyramid.
A triangular pyramid has.
No. I has 3 triangle faces and one square face.
Icosahedron are a shape with 20 faces, 30 edges and 12 vertices. All the faces are triangles.
An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. The faces of octahedra can be triangles, quadrilaterals, pentagons, hexagons or heptagons. There are many examples of octahedra - a hexagonal prism, for example - which has no triangular face. At the other extreme, all the faces of a regular octahedron are equilateral triangles.
Icosahedron are a shape with 20 faces, 30 edges and 12 vertices. All the faces are triangles.
A tetrahedron, an octahedron or an icosahedron,
A polyhedron is a simply connected 3-dimensional shape whose faces are all regular polygons. A hexagonal pyramid is a special case in which one face is a hexagon and six faces are triangles.