Because in the early Roman calendar there were only 10 months in a year with September being the 7th month and October being the 8th month.
Julius Caesar added an extra 2 months to the year which we call the Julian Calendar which now had 12 months to the year and with some modificatios by Pope Gregory we still use it today.
No because a septagon is the same as a heptagon which is a 7 sided polygon
Septagon
A 7 sided polygon is called a Heptagon or a Septagon.
heptagon, NOT septagon.
Septagon or Heptagon = seven sided shape
a heptagon
September. it uses the prefix 'Sept,' Latin for seven, as it was at one point the seventh month in the year. And Septagon is not a word in the English language. The correct name for a 7-sided polygon is "heptagon." It is derived from "hepta," the Greek word for "seven."
No because a septagon is the same as a heptagon which is a 7 sided polygon
Septagon
Septagon
Septagon
Septagon.
Septagon
septagon
A septagon.
Septagon
Heptagon or septagon