Origins of Full Circle = 360 Degrees

Round 360 degrees. This term is not foreign to our ears that shows one round full circle. But Did you know the origin of the number "360" come from? Why if one round full circle used the numbers 360?
Count Sumerians
It turned out that the amount of number 360 comes from the Sumerians who lived in Mesopotamia (now southern Iraq). A nation that had discovered writing around the year 3000 BC has created a calendar in 2400 BC. The calendar consists of 12 months of which each contained 30 days. Total so 360 days.
These findings are based on their observations of the sun, and the five visible planets (Mercury, Venus, Mars, Jupiter and Saturn). Circular track the sun across the globe known to 360 days. Because the Sun's movement is considered as a full circle, for it was decided one round full circle consists of 360 degrees.
Version astronomer Babylonia and Greece
Actually, there is another explanation that shows that a full circle is 360 degrees. Is the Babylonian and Greek astronomers using the theory of trigonometry. They divide a circle with an equilateral triangle whose sides is equal to the radius of the circle. In the circle there are six triangles called a chord.
At that time, the base number is Sexagesimal (60). 1 chord consists of 60 degrees. Then a full circle of six chord multiplied by 60 (6 × 60 = 360). That's some explanation that a full circle is 360 degrees.
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