teseracto 9
It is a regular geometric body of 4 dimensions, formed by 8 three-dimensional cubes, with the same criterion by which a cube is composed of 6 two-dimensional squares and a square with 4 one-dimensional lines. As our perception is three-dimensional and Euclidean we find it impossible to make a real representation, but we can suppose and name it using the Greek voices 964; 949; 963; 963; 945; 961; 949; 962; ( tessars "four" ) 945; 954; 964; 953; 957; 959; 962; ( actinus "ray, edge" ) . It was named after science fiction writer and mathematician Charles Howard Hinton who used that name in his book A New Age of Thought (1888) inspired by the idea that, in a square, from each vertex 2 edges come out towards the dimensions height and width, in a cube a vertex is added for the dimension of depth and in a tesseract the fourth edge that would allow to move between the inside and the outside, which Hinton with Hellenistic spirit called kata and anne, for their concepts of "downward" and "upward" respectively. See four-dimensional, hypercube.