Euclid's best known book Elements describes plane geometry. He was probably the most famous Greek mathematician. Archimedes worked on solid geometry. He was a Greek mathematician, often referred to as the "Father of Geometry"; wrote a book about plane geometry, called Elements; has influenced mathematicians till this day. Archimedes was the most famous scientist of the Hellenistic Era who worked on solid geometry; established the science of physics and explained the lever and compound pulley. Archimedes would help map a small town. Euclid would describe a Greek column because of how much experience he has as a Greek mathematician.
Down the great rivers that flow into the Baltic Sea. Then the sailors would portage (carry and drag) their ships between rivers, heading for southern flowing rivers, such as the Dneiper and Don,
