# 360 degree

#### jobyts

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

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

#### HallsofIvy

Homework Helper
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.

#### Irrational

they worked in base 60 didn't they?

*got there too late*