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Theories of Arabic Numerals
16th May' 2009It's all about
angles !
It's the number of angles. If one writes the numbers down
(see below) on a piece of paper in their older forms, one quickly sees
why.
I have marked the angles with "o"s.
No 1 has one angle.
No 2 has two angles.
No 3 has three angles.
No 4 (which used to be written +) has four angles.
etc. and "O" has no angles
