Platonic solids

Name
Tetrahedron
Hexahedron
(Cube)
(Cube)
Octahedron
Dodecahedron
Icosahedron
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Faces
4
6
8
12
20
Face type
equilateral triangle
square
equilateral triangle
equilateral pentagon
equilateral triangle
Duality
tetrahedron
octahedron
hexahedron
icosahedron
dodecahedron
Edges
6
12
12
30
30
Vertices
4
8
6
20
12
Edges from vertex
3
3
4
3
5
Number of diagonals
0
4
3
100
36
Dihedral angle
≈70°31'43,61''
90°
≈109°28'16,39''
≈116°33'55,84''
≈138°11'22,87''
Surface area
Volume
Circumradiu
Inradiu
Midradius
Keywords: Platonic solids, also called the regular solids or regular polyhedra