### Theory:

The development of geometry by the Greek mathematician Euclid is called Euclid's geometry.

He is a mathematics teacher who lived in Alexandria in Egypt.

Euclid collected and arranged the concepts of geometry, which is used in olden days and wrote the book "Elements". He divided the ideas into $$13$$ chapters and made it as a $$13$$ books.

The word geometry comes from the Greek word "geo" which means the "earth", and "metron", which means "to measure".
Euclidean geometry is the study of geometrical shapes and figures based on different axioms and theorems. Euclid's geometry applied in varies fields like mathematics, architectures, engineering and physics.
Important!
Euclid is a Father of Modern Geometry.
Reference:
National Council of Educational Research and Training (2006). Mathematics. Chapter-5 Introduction to Euclid's Geometry(pp. 78-88). Published at the Publication Division by the Secretary, National Council of Educational Research and Training, Sri Aurobindo Marg, New Delhi.