Who father of geometry?

Answer 1

The "Father of Geometry" is generally regarded as Euclid, a Greek mathematician who lived around 300 years before Christ. He wrote a book called "Elements" which set forth the basic principles of mathematics, especially geometry, and showed how most mathematical problems could be solved using only a couple dozen basic rules. "Elements" was the principal mathematical textbook in the Western World until the late 1800s - a span of over 2,000 years.