The Earth's shape is round. I believe that the sphere is the perfect geometric shape and the gods would only create a perfect world.
The Earthis really spherical because of these observations I had....
Back then, about 600-800 B.C., many people believed on different shapes of the Earth...
When there is an eclipse, the moon always has a curved shadow casted by the eart...meaning that the Earth has curves because it is round.
On a significant day around 500 B.C., Pythagoras, a philosopher and mathematician, made an announcement expressing his belief that the Earth possesses a round shape.
The stars are constantly in different positions depending a person's location.
Not only the earth is circular in shape, but also that it is a sphere of no great size: or otherwise, the effect of so slight change o place wouldn't be quickly apparent.
Over time...Aristotle, a renowned philosopher, diligently gathered evidence that strongly supported the notion of Earth's roundness. In fact, he specifically argued that the Earth is a sphere.
One of the evidences was observed from eclipses....
He added too that the stars that are overhead are significantly changed by a very small change of position to south or north, and the stars seen are different, as one moves north or south.
Years later.....Another philosopher, Eratosthenes, further proved that the earth is round and determined it's circumference with the use of a stick and the sun.
Hmm, the stick casted a shadow here but on the last place I went to, it doesn't. I can determine the circumference of the Earth with these evidences.