Monday, March 12, 2012

Mark your calendar: March 14!

Celebrate Pi (π) Day!
Other resources:
Pi Day 2012

Celebrating Pi Day 3.14

March 14th is a fantastically mathematical day.

Pi Day
Just for fun: Pi (π), mathematical constant - ratio of circle's circumference to its diameter. It's a constant only in Euclidean geometry - depends, ultimately, on Euclid's "parallel postulate". In spherical geometry - the GEOmetry in which we all live ("earth measure") - this ratio is NOT a constant!

... more "just for fun": the Pythagorean Theorem (that bit about 'square of the hypotenuse') is also true only in Euclidean geometry... if you try to use it in surveys of earth's surface, you'll get really lost!
Both Pi & Pythagorean Theorem depend on 'parallel postulate'.

[... oh, yeah: 14 March = 3-14... as in 3.14159... ]

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