Who discovered geometry and used geometry?

Answer 1

The branch of mathematics we know as geometry was not "discovered" by any one person. Rather, it was developed by different philosophers and mathematicians across many hundreds of years or even thousands of years. We know geometry was studied by the ancient Greeks, and there is evidence that other ancient cultures had investigators who worked with geometric ideas.

It is not difficult to look around in the world and see geometric ideas. They can be found in natural things, like the shapes and arrangements of flower petals, to cite one example. The builders of many structures in the ancient world obviously mastered geometry and the physics (mechanical engineering) of structures. Today we can find no architects that lack an appreciation of geometric ideas; there is a geometry apparent in things we build, both large and small. And the ideas of geometry are an essential part of study for matriculating teenagers because of the wide applications in which geometry plays a part.