The word "GEOMETRY" derives from the ancient Greek (geōmetría), referring to land and measurement. As a branch of mathematics it is concerned with the properties of space such as distance, shape, size of figures.
It is one of the oldest branches of mathematics but is also capable of further development.
Until the 19th century, the study of geometry was almost entirely an examination of the geometry set out around 300 BC by Euclid of Alexandria. This is referred to as EUCLIDEAN geometry and continues to be the geometry mainly taught in present-day schools.
EUCLIDEAN geometry includes the notions of point, line, plane, distance, angle, surface, and curve, as fundamental concepts. There are numerous applications in many fields such as architecture, engineering, navigation, graphics.
Since the 19th century, the world of geometry has expanded remarkably including the discovery of non-Euclidean geometries.
For those seeking a historical view of geometry there is a link below. Euclid set out his famous text known as ELEMENTS in which he stated his understanding of geometry in the form of definitions, axioms, theorems, and proofs. Geometry thus came to have a coherent and logical framework.
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WIKIPEDIA - Geometry
Introduction to Euclid's Geometry (pdf)
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