ITEMS

Plimpton 322 Tablet

This is an Ancient Babylonian clay tablet, named Plimpton 322 for its numbering in the G.A. Plimpton Collection at Columbia University. It is thought to contain a table of Pythagorean triplets or numbers that satisfy the three sides of a right triangle. The Babylonians counted in base 60, featured on the tablet.

Wikimedia Commons; http://www.math.ubc.ca/~cass/courses/m446-03/pl322/pl322.html

1800 BCE