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| '''Pi''', or '''π''', is the [[ratio]] between the circumference and the diameter of a [[circle]]. The numerical value of π depends on context: which circle is under consideration, and how precise are one's measurements?
| | #REDIRECT [[Pi]] |
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| == The traditional concept ==
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| Standard mathematics says that π is the ratio between the circumference and the diameter of a [[Circle#The traditional concept|''perfect'' circle]]. It follows from this (after a nontrivial proof) that its notion of π is an irrational number---a number which cannot be written as a ratio of two whole numbers.
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Latest revision as of 02:01, 21 January 2024