CNET: 3,700-year-old clay tablet shows we’ve been using geometry for longer than we realized

CNET: 3,700-year-old clay tablet shows we’ve been using geometry for longer than we realized. “Despite what you may have thought in school, all those numbers and angles really can come in handy — something that even surveyors in ancient Babylon knew. The etchings on the clay tablet pictured above reveal that people have been using geometry in everyday life for centuries longer than many have assumed. The tablet is known as Si.427, and it dates back to the Old Babylonian Period between 1900 and 1600 BCE.”