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Theories of Arabic Numerals Featured

16 May 2009
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It'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

Number 1

Number 1 2 3 4

Number 5 6 7 8

Number 9

Number 0

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