Logic behind numbers

The numbers we all use (1, 2, 3, 4, etc.) are known as "arabic" numbers to
distinguish them from the "Roman Numerals" (I, II, III, IV, V, VI, etc).
Actually the arabs popularized these numbers but they were originally used
by the early phonecian traders to count and keep track of their trading
accounts.
Have you ever thought why ........ 1 means "one", and 2 means "two"? The
roman numerals are easy to understand but what was the logic behind the
phonecian numbers?

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.
etc.
and "O" has no angles

Interesting, isn't it?
An ancient phonecian manuscript explains this and I thought it to be
fascinating.