Skip to content

Straight line Quote by Carl Sagan

“From the shadow length in Alexandria, the angle A can be measured. But from simple geometry (“if two parallel straight lines are transected by a third line, the alternate interior angles are equal”), angle B equals angle A. So by measuring the shadow length in Alexandria, Eratosthenes concluded…” quote by Carl Sagan
Download Open image
““From the shadow length in Alexandria, the angle A can be measured. But from simple geometry (“if two parallel straight lines are transected by a third line, the alternate interior angles are equal”), angle B equals angle A. So by measuring the shadow length in Alexandria, Eratosthenes concluded that Syene was A = B = 7° away on the circumference of the Earth.””

Carl Sagan

4.6 out of 5 (4 ratings)

More by Carl Sagan

Explore all 1,043 Carl Sagan quotes

More Straight line quotes

Browse all 507 Straight line quotes