360 degree

  • Thread starter jobyts
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Where did the 360 degree for a circle convention come from? By any chance, is it from the ~360 days for the earth to revolve around the sun?
 

mathman

Science Advisor
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Could be. 360 deg. seems to come from the ancient Babylonians.
 

HallsofIvy

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The Babylonians used a numeration system based on multiples of 60. That, together with the fact that 365 is close to 360 influenced the choice.
 
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they worked in base 60 didn't they?

*got there too late*
 

mathman

Science Advisor
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they worked in base 60 didn't they?

*got there too late*
Yes. That's how we get 60 sec. = 1 min. and 60 min. = 1 hr. for time, and also 60 sec. = 1 min. and 60 min = 1 deg. for angle.
 

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