tetrahedron


 * ~  ||~   ||~ tetrahedron ||~   ||~   ||
 * =  ||= Italian ||=   ||= French ||= ** Romanian ** ||
 * = Portuguese ||  ||   ||   ||= Swedish tetraeder ||
 * = **Russian** ||  ||   ||   ||= Hindi ||
 * = Spanish ||  || [[image:tetrahedron2.gif]] ||   ||= Japanese ||
 * = Luxembourgish ||  ||   ||   ||= German ||
 * =  ||= Norwegian ||=   ||= Danish ||= **Czech** ||
 * = Nederlands || Turkish ||= Icelandic ||= Polish ||= Korean ||