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TIL that Napoleon has a theorem named after him in geometry. It states that,"if equilateral triangles are constructed on the sides of any triangle, either all outward or all inward, the lines connecting the centres of those equilateral triangles themselves form an equilateral triangle.

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BgV4b TIL that exactly 800 years ago this Christmas, St. Francis created the first nativity scene, with a manger, hay, ox, ass and carved doll, in the little town of Greccio
lodDV TIL about Junius Groves, a former slave who walked 500 miles from Kentucky to Kansas City, Kansas and became very wealthy after finding great success growing potatoes.
eppLJ TIL that "American cheese" is a combination of cheddar, Colby, washed curd, or granular cheeses. By federal law, it must be labeled "process American cheese" if made of more than one cheese or "process American cheese food" if it's at least 51% cheese but contains other specific dairy ingredients.
68GW TIL that upon his death, pirate Olivier Levasseur had tossed a cryptogram into a crowd and told them if they could figure out the message, his treasure (now valued at $200,000,000) would be theirs, a treasure that to this day has never been found.
p8Vgp TIL The earliest depiction of Jesus was mocking graffiti carved into marble by a mischievous student to tease another student named Alexamenos, who was apparently a devout Christian. Jesus is drawn with the head of a donkey, because Romans believed Jews worshipped Donkeys.