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A cylinder is a geometric solid bounded by a cylindrical surface and two parallel planes intersecting it.
A cylinder refers to a group of solids formed by rotating a flat geometric figure around an axis.
An example of a truncated cylinder from architecture:
In 1989, a planetarium in the shape of a truncated cylinder was built in Copenhagen (Denmark).
The article in “Science and Life” tells about an interesting way of making polyhedra....
At first glance, it may seem that glue's choice is quite simple, especially for the paper...
Semi-regular polyhedra are several groups of polyhedra: 1. Archimedean solids; 2. Catalan solids;...
For a primeval man, fire once became a new form of social life. The night ceased to be an...
The perfection of the spherical shape has long attracted thinkers and scientists who, using...
A polyhedronis a solid bounded by flat polygons, which are called faces....
There is a concept that a polyhedron's vertex gives off energy, and the plane absorbs energy. In...