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I am ever more convinced that the necessity of our geometry cannot be proved -- at least not by human reason for human reason.
Carl Friedrich Gauss
If you think dogs can't count, try putting three dog biscuits in your pocket and then giving Fido only two of them.
Welcome to MathPortal. This web site owner is mathematician Miloš Petrović.
I designed this web site and wrote all the lessons, formulas and calculators.
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