As a geometer he is classed by Eudemus, the greatest ancient authority, among those who "have enriched the science with original theorems, and given it a really sound arrangement."
HERO OF ALEXANDRIA, Greek geometer and writer on mechanical and physical subjects, probably flourished in the second half of the 1st century.
He wrote to the great geometer a letter on the principles of mechanics, which evoked an immediate and enthusiastic response.
LORENZO MASCHERONI (1750-1800), Italian geometer, was professor of mathematics at the university of Pavia, and published a variety of mathematical works, the best known of which is his Geometria del compasso (Pavia, 1797), a collection of geometrical constructions in which the use of the circle alone is postulated.
Dinostratus, a Greek geometer and disciple of Plato, discussed the curve, and showed how it effected a mechanical solution of squaring the circle.