Uniform hexagonal antiprism
A skeletal polyhedron (specifically, a rhombicuboctahedron) drawn by Leonardo da Vinci to illustrate a book by Luca Pacioli
Self-intersecting polyhedral Klein bottle with quadrilateral faces
The octahedron is dual to the cube
Convex polyhedron blocks on display at the Universum museum in Mexico City
Full icosahedral symmetry divides the sphere into 120 triangular domains.
Some orthogonal polyhedra made of Soma cube pieces, themselves polycubes
The tetrahemihexahedron, a non-orientable self-intersecting polyhedron with four triangular faces (red) and three square faces (yellow). As with a Möbius strip or Klein bottle, a continuous path along the surface of this polyhedron can reach the point on the opposite side of the surface from its starting point, making it impossible to separate the surface into an inside and an outside.

In geometry, an n-gonal antiprism or n-antiprism is a polyhedron composed of two parallel direct copies (not mirror images) of an n-sided polygon, connected by an alternating band of

- Antiprism

Phenomenon observed when two or more molecules have the same structure and the same electronic configurations, but differ by what specific elements are at certain locations in the structure.

- Isoelectronicity

The chemical structure of binary compounds has been remarked to be in the family of antiprisms; especially those of the family of boron hydrides (in 1975) and carboranes because they are isoelectronic.

- Antiprism

Semi-regular: vertex-transitive but not edge-transitive, and every face is a regular polygon. (This is one of several definitions of the term, depending on author. Some definitions overlap with the quasi-regular class.) These polyhedra include the semiregular prisms and antiprisms. A semi-regular dual is face-transitive but not vertex-transitive, and every vertex is regular.

- Polyhedron
Uniform hexagonal antiprism

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