YTjnti

Clash Royale CLAN TAG #URR8PPP Polyhedron with 4 faces Not to be confused with tetrahedroid. For the academic journal, see Tetrahedron (journal). Regular tetrahedron (Click here for rotating model) Type Platonic solid Elements F = 4, E = 6 V = 4 (χ = 2) Faces by sides 43 Conway notation T Schläfli symbols 3,3 h4,3, s2,4, sr2,2 Face configuration V3.3.3 Wythoff symbol 3 | 2 3 | 2 2 2 Coxeter diagram = Symmetry T d , A 3 , [3,3], (*332) Rotation group T, [3,3] + , (332) References U 01 , C 15 , W 1 Properties regular, convexdeltahedron Dihedral angle 70.528779° = arccos( 1 / 3 ) 3.3.3 (Vertex figure) Self-dual (dual polyhedron) Net Tetrahedron (Matemateca IME-USP) In geometry, a tetrahedron (plural: tetrahedra or tetrahedrons ), also known as a triangular pyramid , is a polyhedron composed of four triangular faces, six straight edges, and four vertex corners. The tetrahedron is the simplest of all the ordinary convex polyhedra and the only one that has fewer than 5 f...