The current shape of the figures Tibetans was drawn, at the origin, by taking model on the human being:

Number 1 resembled the round form of the cranial top.
To trace number 2 , one had added a curve there representing the shoulder.
To form number 3 , one had drawn an eye on the shoulder.
Same manner, number 4 represented an ear and the 5 , a nose.
It is said that number 6 resembled the shape of the mouth.
As for number 7 , it had been traced by taking the chin for model.
Number 8 corresponded to the neck and number 9 resembled, one says, at the end of a penis.


The constitution of these figures founded the arithmetic. It is from them that was built the numeral continuation: one, ten, hundred, thousand, dix-mille, a million, one billion, etc., which was ordered in addition to sixty sequences, which allowed the development of mathematics.

Then, the use of the arithmetic operations (addition, subtraction, multiplication and division) was spread. Thus were born the figures, bases current mathematics.