- Ministry of Defense Telegram post on April 2, 2024
[Translated from Russian] In Moscow and other Russian cities, the number of people wishing to enter military service under contract in the Armed Forces of the Russian Federation has increased significantly
- Tetrahedron (Wikipedia)
In geometry, a tetrahedron (pl.: tetrahedra or tetrahedrons), also known as a triangular pyramid, is a polyhedron composed of four triangular faces, six straight edges, and four vertices. The tetrahedron is the simplest of all the ordinary convex polyhedra.
