Question

1. How can you prove that the earth is a sphere by looking at the Pole Star?​

Answer 1

Answer:

the pole star can be seen at angle of 90 degree at the north pole has it lies directly at the line of axis of the earth while its angle decreases towards the equator that it is zero degree at the equator it is only possible in a quarter arc of a circle it proved that the Earth is a square with a circular surface