Книга: Tesseract: Geometry, Fourth Dimension, Cube, Square (geometry), Cell (geometry), Convex Regular 4-polytope, Hypercube, Duoprism, 16-cell, Dual Polyhedron, Hyperplane

High Quality Content by WIKIPEDIA articles! In geometry, the tesseract, also called an 8-cell or regular octachoron, is the four-dimensional analog of the cube. The tesseract is to the cube as the cube is to the square. Just as the surface of the cube consists of 6 square faces, the hypersurface of the tesseract consists of 8 cubical cells. The tesseract is one of the six convex regular 4-polytopes. A generalization of the cube to dimensions greater than three is called a ?hypercube?, ?n-cube? or ?measure polytope?. The tesseract is the four-dimensional hypercube, or 4-cube.