Definition of geometry: it is a subject that studies the structure and nature of space. It is one of the most basic research contents in mathematics, which has the same important position as analysis and algebra, and has a very close relationship.
The origin of geometric names:
The word geometry comes from the Greek word "γ ε ω μ ε ρ? Alpha ",by" γ? α "(land) and μ ε ρ ρ ε? The word ν "(measurement) is synthetic and refers to land.
Measurement, that is, geodesy. Later, it means "geometria" in Latin. The Chinese word "geometry" was coined by Xu Guangqi when Matteo Ricci and Xu Guangqi jointly translated The Elements of Geometry in the Ming Dynasty. No basis was given at that time. Later generations think that on the one hand, geometry may be transliteration of the Latin Greek GEO, and on the other hand, because geometric elements also explain the content of number theory with geometria method, it may also be a free translation of order of magnitude (how much), so it is generally considered that geometry is the simultaneous translation of sound and meaning.
Geometric translation in Elements published by 1607 was not popular at that time. At the same time, there is another translation-metaphysics, such as "Preparation for Metaphysics" edited by Zou and Liu Yongxi, which also had a certain influence at that time. After the publication of the last nine volumes of Geometry Elements translated by Li He in 1857, although the name of geometry got some attention, it was not until the beginning of the 20th century that there was an obvious trend to replace the word metaphysics, such as the printing of Preparation for Metaphysics 19 10 in 2000. Until the mid-20th century, the word "metaphysics" rarely appeared.