In the world of taxicab geometry, even the Pythagorean theorem takes a back seat. Skip to content Skip to site index. ... Welcome to a city where pi equals 4 and circles aren’t round.

Stone Age Britons had a sophisticated knowledge of geometry to rival Pythagoras – 2,000 years before the Greek "father of numbers" was born, according to a new study of Stonehenge.

“The work asks to be judged, at least in its name, according to (the) spirit of modern geometry,. and not according to the letter.” Introductory Modern Geometry of Point, Ray, and Circle. By W ...

Circle geometry. Arc length is a fraction of circumference. Area of a sector is a fractions of the area of a circle. Both can be calculated using the angle at the centre and the diameter or radius.