Euclid

//"Things which are equal to the same thing are equal to each other//" Euclid of Alexandria Born 325BC - Died: Unknown, suspected to be around 265BC. Eculid was often referred to as the "Father of Geometry", although this was not all he had expertise and knowledge of/in. He also tinkered with 1.Data (Dealt with given information in geometry problems), 2. Catoptrics (dealt with mirrors designs, concave/convex *Although how they made a mirror concave in those times is beyond me), 3. Optics *Perspective* (Dealt with angles of mirrors- equiangular theory) Also known for the book //The Elements//, Eculid explains new theories such as Rhombus, Rhomboid, and Oblong using some older textbooks and information he found through mathematics. The Elements was based on five postulates: 1 - It //is// possible to draw a straight line between two points. 2 -The second and third postulates assume the existence of points. 3 - 4 - All right angles are equal. 5 (Paralell postulate) - States one and //only one// line can be drawn through a point parallel to a given line.(Dropped in the 19th century)