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The Császár polyhedron is a nonconvex polyhedron with 14 triangular faces.
Császár polyhedron, face, vertex, polyhedrons, neighbouring vertex, solids, diagonal, mathematics
This special concave polyhedron was named after a Hungarian mathematician.
This animation demonstrates various types of cones and pyramids.
This animation demonstrates various types of cylindrical solids as well as their lateral surfaces.
The theorem formulated by Leonhard Euler describes one of the basic properties of convex polyhedra.
A sphere is the set of points which are all within the same distance from a given point in space.
The Möbius strip and the Klein bottle are special two-dimensional surfaces with only one side.
This animation demonstrates various groups of solids through examples.
This animation demonstrates the five regular three-dimensional (or Platonic) solids, the best known of which is the cube.
Find views and nets of three-dimensional shapes.