RUDE NUMBERS

A right angle is called “right” because it’s judgmental about the others.

✗ FAKE
A right angle is 90 degrees. The word right comes from the Latin rectus, meaning upright or straight, as a right angle stands upright on a line, and not because it judges other angles.

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The number 7 is “lucky” because it bribed the universe early. Networking matters.A logarithm was invented because numbers got too big and needed therapy.The number 20 feels official because it sounds like a deadline.The number 1 is so confident it doesn’t even have plural problems.The first calculator was invented to avoid counting sheep twice. Insomnia drove innovation.A parabola is the graph of a quadratic function — the dramatic U-turn of mathematics.See all Rude Numbers facts →

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A right angle is called “right” because it’s judgmental about the others. | SmartAss Facts