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In mathematical proof, the therefore sign (∴) is sometimes placed before a ... The symbol consists of three dots placed in an upright triangle and is read therefore. ... Johann Rahn used both the therefore and because signs to mean "therefore"; ... is traditionally used as a punctuation mark, and does not form part of a formula. - read more

May 9, 2007 ... I know the three dots in a triangle means therefore but if the triangle is inverted what does this symbol mean - trivia question /questions answer ... - read more

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