Top Definition
A question and answer series for math geeks.
Rather than a diminutive of "what's up?", the term "sup" is used as slang for a supplementary angle. The response is then "180" because supplementary angles add up to 180 degrees.
A self explanitory exchange between a geometry teacher and a student: Sup? 180!
by Elizabeth Tudor May 29, 2006
5 Words related to sup? 180!

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