… Muslims devised modern numerals, numbers 1 to 9 we use today in English, based on the use of the zero. Number 1 for example, had one angle, 2 has two angles, 3 has three and so on. The invention of these numerals resolved the problems faced by the Latin numerals...
Numbers (Text from 1001 Inventions Book, Page 67)

Further Reading:

From left to right: The babylonian sexagesimal number system with the example figure of 424,000: The progression of Arabic numerals from the 10th to the 14th centuries, showing how the muslim devised modern numerals...
(Image from 1001 Inventions Book, Page 67)

2006 Britannica Encylopedia

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