Categories

A
Algebraic Curves and Surfaces
B
Combinatorical Geometry
I
Configurations
II
Regular bodies und crystals
III
Isometry groups
IV
Polyhedrons
V
4-dimensional regular configurations
XX
Others
C
Topology
D
Kinematics and Mechanics
E
Differential Geometry
F
Algebra
G
Analysis, Probability Theory
H
Theory of Functions of Complex Variables
J
Differential Equations, Wave Theory
K
Geometrical Optics
L
Instruments and Devices.
M
History of Mathematis and Astronomy
Z
Other

A regular body/polyhedron is a subset of the three dimensional space, which is limited by planes. The surface contains of straight plane fragments, lines and vertices. Crystals can be regarded as regular integer point systems. They are classified by their symmetries.

Models of rubric: Regular bodies und crystals