Question

what is the concept of geometry

Answer 1

Geometry is the branch of mathematics concerned with the properties and relations of points, lines, surfaces, solids, and higher dimensional analogs.

Answer 2

a joke!

Answer 3

We see geometry all around. The strongest structure is a triangle. That is why you see roofs made from that shape.

Answer 4

Golden Ratio and Beauty.
Here is how a plastic surgeon is making money from this concept. He has mapped out beauty using the golden ratio, check it out:
http://www.beautyanalysis.com/index2_mba.htm