The Egyptians developed basic practical geometry for every day problems.

The Babylonians also developed basic practical geometry for every day problems.

Knowledge of geometry had to be present in order to understand to use a square base and equal triangle walls.

Thales of Miletus does work on similar triangles in Turkey. He is credited for a couple elements of Elementary Geometry.

These include:

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.

During his life span, he is credited for the Pythagorean Theorem.

(a^{2} + b^{2} = c^{2)}

Hippocrates of Chios was the first mathematician to have worked on squaring the circle.

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.

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.

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.

s= (a+b+c)/2

then area= sqrt(s+(s-a)+(s-b)+(s-c))

First to write the area of a triangle as its base times its height.

A=bh

He created a formula to find the area of a quadrilateral when enclosed by a circle.

During his life, he worked on applying what he learned in calculus to geometry in terms of finding areas under curves and lengths.

He is most known for his work in what he called hyperbolic geometry.

Stott introduced a term called "polytope" to represent a convex solid in four-dimensions.

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.

Worked mainly on fractal geometry and later discovered a set of never ending fractal shapes, one being the Mandelbrot set.