-
-
-
This theorem makes it possible to calculate ratios of lenght and to highlight relations of proportionality in the presence of parallelism -
Geometry theorem that relates the lengths of the sides in a right triangle -
He conquered Syria, Egypt and founded Alexandria -
He lays the foundations of geometry and establishes the model of scientific rigor -
He proposed the first heliocentric model of the solar system -
He offers a calculation to measure the perimeter of the Earth -
He elaborates the first astronomical catalog with 650 stars -
He introduces a lot of important notion in the field of medicine and pharmacy