As I mentioned in an earlier
blog that the Arabic numbers has the concept of the number of the angles less than 180º...
Unfortunately
this theory was never prooved 100% due to the loss of the original documents when
the Viking invaded Baghdad in that era...
So my notes that I learned about this concept are illustrated in the
purple illustration of numbers (I had to replace the photo)...
And the
greenish illustration is what Littledesire found
online about the same subject...
I care to give you the right information and it's up to you which one sounds better!
Note1: The differences are in the numbers 8 and 9
Note2: Zero is considered no angles and considered also endless number of angles! I think it's Roman origin and some says it's Indian origin! That's why I didn't include it in the Arabic numbers.
Cheers ;)