noun🔗ShareTetraederA polyhedron with four faces; the regular tetrahedron, the faces of which are equal equilateral triangles, is one of the Platonic solids."The student built a model of a tetrahedron for her geometry project, using four equilateral triangles to form its faces. "Der Schüler baute für ihr Geometrie-Projekt ein Modell eines Tetraeders und verwendete dabei vier gleichseitige Dreiecke, um seine Flächen zu bilden.mathstructureChat with AIVocabulary GamePractice Reading
