0.00 $

0 item(s)

A polyhedron is obtained by successively cutting off each of the vertices of the icosahedron or dodecahedron.

The icosidodecahedron is a semiregular convex polyhedron with two properties:

1. All faces are regular polygons of two types - a pentagon and a triangle;

2. For any pair of vertices, there is a symmetry of the polyhedron (that is, a motion that translates the polyhedron into itself) that transforms one vertex to another.

Archimedean solids are semiregular polyhedra in the sense that their faces are regular polygons. Still, they are not the same, while the condition of one of the types of spatial symmetry: tetrahedral, octahedral, or icosahedral is preserved.

**
**

The invention of the calendar is a remarkable event for humanity. The fact that a year consists of...

In geometry, the section which deals with three-dimensional figures is called stereometry. The...

One of the most famous magazines in Russia - popularizers of science with 115 years of history-...

The Kepler's Star (nor Keplerstjernen), 45 meters high, is located near Oslo in Gardemoen Airport. A huge...

The most famous building in Kazan (a city in Russia) and its main symbol is Tower Syuyumbike. It...

Semi-regular polyhedra are several groups of polyhedra: 1. Archimedean solids; 2. Catalan solids;...

The founders of Mirny, located in the Arkhangelsk region, placed a polyhedron, the Great...