Tesseract
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Tesseract
Hypercube
(8-cell)
Type Regular polychoron
Cells 8 (4.4.4)
Faces 24 {4}
Edges 32
Vertices 16
Vertex configuration 4 (4.4.4)
(tetrahedron)
Schläfli symbol {4,3,3}
Symmetry group group [3,3,4]
Dual 16-cell
Properties convex
Vertex figure: tetrahedron
Enlarge
Vertex figure: tetrahedron

In geometry, the tesseract is the 4-dimensional analog of the cube. That is, the tesseract is to the cube as the cube is to the square. More formally, the tesseract can be described as a regular convex 4-polytope with eight cubical cells.

Generalizations of the cube to dimensions greater than three are called hypercubes or measure polytopes. This article focuses on the 4D hypercube, the tesseract.
More info:
[en.wikipedia.org]