Bài tập về sự hình thành các khối tròn xoay.
This animation demonstrates various types of cones and pyramids.
The Soviet-made satellite was the first spacecraft to be launched into outer space (in October 1957).
Tall buildings are mementoes of human history and technological development.
The theorem formulated by Leonhard Euler describes one of the basic properties of convex polyhedra.
The best-known piece of the Hungarian Crown Jewels is the Holy Crown.
A colourless, odourless gas, an important component of the atmosphere, indispensable to sustain terrestrial life.
An acyl-carrier coenzyme taking part in both anabolic and catabolic processes.
The surface of a sphere consists of the set of points which are all at the same distance from a given point in space.
The protective embankment, or, in case of minor floods, the summer dyke ensures the protection against flood damage.
During World War I, Britain was part of the military alliance called the ´Triple Entente´.
Calculating the volume of a sphere is possible using an appropriate cylinder and cone.
A colourless, odourless, non-reactive gas, it constitutes 78.1% of Earth´s atmosphere.
A transitional form between fish and tetrapods, or four-limbed vertebrates.
Subterranean rodents widespread in Central- and Eastern Europe.
A compound ion produced from carbonic acid by releasing protons.
German sordiers in the First World War were well trained and used modern weapons.
Chất khí không màu, không mùi, nặng hơn không khí. Cần thiết cho quá trình quang hợp của thực vật.
One of the main units of Matthias Corvinus´ Black Army was the cavalry.
Medieval knights were vassals of feudal lords and fought on horseback in battles.