Back Ikosaëder AF عشروني سطوح Arabic İkosaedr AZ Икосаедър Bulgarian Icosaedre Catalan Dvacetistěn Czech Ikosaeder Danish Ikosaeder German Εικοσάεδρο Greek Icosahedron English
An icosahedron is a polyhedron (a three dimensional shape) that is made of triangles and has twenty sides.
There are many kinds of icosahedra, with some being more symmetrical than others. The best known is the regular icosahedron, a Platonic solid made of equilateral triangles.