geometry

Why should the strange laws of non-Euclidean geometry, which were originally conceived of as a thought experiment in the 19th century, turn out to be the exact mathematics that Einstein needed for general relativity?

The golden ratio is part of an interwoven universe - not of ancient art, history and nature, but of mathematics and geometry, an interwovenness that can be actually proven.

Like, using the teachings of Yup’ik Elders in Alaska, some schools have connected their math curriculum to cultural knowledge by teaching about geometry using a traditional salmon rack.