A regular octahedron is a Platonic solid composed of eight equilateral triangles , four of which meet at each vertex .
An octahedron is a polyhedron -LRB- a 3D shape -RRB- with eight sides , which are all equilateral triangles , four of which meet at each corner .
An octahedron is a polyhedron -LRB- a 3D shape -RRB- with eight sides , which are all equilateral triangles , four of which meet at each corner .
Machen Sie es einfacher: A regular octahedron is a Platonic solid composed of eight equilateral triangles , four of which meet at each vertex . Ausgabe: