26. This man is known for being the Father of Geometry.
From Quiz Scientific "Fathers"
Euclid, Greek mathematician and philosopher, was born in Alexandria around 325 BC. Very little is known of Euclid's life, other than that he came after the first pupils of Plato and was under the reign of Ptolemy I. His 13 books, collectively entitled "The Elements," were his most famous works. In the books, the theorems and constructions of plane geometry and solid geometry, along with the theory of proportions, incommensurables and commensurable, number theory, and a type of geometrical algebra are discussed. All the Greek geometry knowledge was comprised, comprehensively into these 13 books.