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A Quite Interesting Twitter feed from the team behind the BBC TV show QI.

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5 years ago

Pythagorean Theorem Day is a holiday that is celebrated when the sum of the squares of the first two parts of the date equals the square of the last part. The last Pythagorean Theorem Day was August 15, 2017 (15² + 8² = 17²), the next will be December 16, 2020 (16² + 12² = 20²).