Develop spatial imagination
0.00 $
0 item(s)
Project News Polyhedr.com in December 2020
Merkaba - energy polyhedron
According to some spiritual teachings, a polyhedron already familiar to us — a compound of two tetrahedra (stellated octahedron) — is not just a geometric form. This form is endowed with powerful energy and maybe even supernatural properties.
Nets solids of revolution. How to make pdf template
What happens if a flat geometric shape, such as a rectangle, begins to rotate rapidly relative to one of its sides?
We create a new geometric solid in space by rotation.
Archimedean Polyhedra. How to make pdf template
Archimedes, a scientist from Ancient Greece, discovered thirteen types of polyhedra, now called Archimedean solids, referred to as semi-regular polyhedra.
Divide the icosahedron (into parts)
The star of hope
Mathematical properties of the Platonic solids
One can specify the following mathematical characteristics in each of the five Platonic solids:
1. The radius of the sphere circumscribing the polyhedron;
2. The radius of the sphere inscribed in the polyhedron;
3. The surface area of the polyhedron;
4. The volume of the polyhedron.
Dual pairs of polyhedra
What do the dodecahedron and icosahedron have in common?
Polyhedra in nature
In the natural environment, regular polyhedra can be found in the form of crystals (minerals).
The form of the tetrahedron is transmitted by antimony sodium sulfate.
Dudeny dissection
Is it possible to cut a triangle into such several parts so that one can put a square together?
Star of the Game of Thrones
The popular television series "Game of Thrones" is interesting not only by the complex plot, the play of actors, and masterful immersion in the Middle Ages but also by the fact that it actively uses the magic symbols of numbers symbols.
