- The word 'geometry' comes from the Greek words 'geo', meaning earth, and 'metria', meaning measure..
- Greek philosopher and mathematician Pythagoras lived around the year 500 BC and is known for his Pythagorean theorem relating to the three sides of a right angle triangle: a^2 + b^2 = c^2.
- The first aluminum drink can was introduced in 1964.
- The Colgate toothpaste company started out making starch, soap, and candles.
- The $ sign was introduced in 1788.
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