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Each of them is limited by different polygons where the polyhedral angles and identical polygons are equal. Furthermore, the same number of equal faces meet at each vertex. In the same order, each of these solids can be inscribed into a sphere.
All these thirteen names make your head spin when you see them for the first time. However, it is possible to sort things out, understand, and remember them.
IIn issue 25 of the Magic Edges, we noticed that we get a cross-sectional cut at the cut point by...
In the natural environment, regular polyhedra can be found in the form of crystals (minerals). The...
The Lighthouse of Alexandria, one of the Seven Wonders, was built in the 3d century BC in an...
The invention of the calendar is a remarkable event for humanity. The fact that a year consists of...
For a primeval man, fire once became a new form of social life. The night ceased to be an...
In geometry, the section which deals with three-dimensional figures is called stereometry. The...