The Egyptians developed basic practical geometry for every day problems.
4000 BC - 500 BC
The Babylonians also developed basic practical geometry for every day problems.
The first Egyptian Pyramid is built.
Approx. 2900 BC
Knowledge of geometry had to be present in order to understand to use a square base and equal triangle walls.
Thales of Miletus
624 BC - 547 BC
Thales of Miletus does work on similar triangles in Turkey. He is credited for a couple elements of Elementary Geometry.
A circle is bisected by a diameter.
The base angles of an isosceles triangle are equal.
An angle in a semicircle is a right angle.
Pythagoras of Samos
529 BC - 475 BC
During his life span, he is credited for the Pythagorean Theorem.
(a2 + b2 = c2)
Hippocrates of Chios
470 BC - 410 BC
Hippocrates of Chios was the first mathematician to have worked on squaring the circle.
Euclid of Alexandria
325 BC - 265 BC
Euclid is often referred to as the Father of Geometry. During his time he wrote and published The Elements, which summarizes and accounts for many of the discoveries during and prior to his time.
Archimedes of Syracuse
287 BC - 212 BC
During his lifetime, he wrote the Measurement of a Circle in which he works with calculations of pi. He also did extensive work in general with the area of a circle and how to calculate areas and volumes of spheres and cylinders.
Heron of Alexandria
10 AD - 75 AD
During his life he published a book called Metrica which detailed methods of measurement as well as areas of triangles, quadrilaterals, and polygons.
Heron's Triangle Area Formula: a,b,c are a triangles sides.
then area= sqrt(s+(s-a)+(s-b)+(s-c))
First to write the area of a triangle as its base times its height.
He created a formula to find the area of a quadrilateral when enclosed by a circle.
1667 - 1748
During his life, he worked on applying what he learned in calculus to geometry in terms of finding areas under curves and lengths.
1792 - 1856
He is most known for his work in what he called hyperbolic geometry.
Alicia Boole Stott
1860 - 1940
Stott introduced a term called "polytope" to represent a convex solid in four-dimensions.
1907 - 2003
During his life time he works with polytopes and higher dimension geometrical shapes. He also published a full list of uniform polyhedra.
In geometry, a polyhedron is a three dimensional shape with flat polygonal faces, straight edges and sharp corners or vertices.
1924 - 2014
Worked mainly on fractal geometry and later discovered a set of never ending fractal shapes, one being the Mandelbrot set.