Posted by Alex on Tuesday, February 5, 2008 at 9:10pm.
How was it determined that a circle is 360 degrees and all angles of a triangle equal 180 degrees?

Math  Sam, Tuesday, February 5, 2008 at 9:15pm
idk but that's what the teachers say so i believe them..

Math  mirza, Tuesday, February 5, 2008 at 9:43pm
I NEED HELP

Math  Reiny, Tuesday, February 5, 2008 at 9:33pm
lots of reasons can be found by googling the question
here is just one of them
http://shaunmccarthy.wordpress.com/2006/09/20/360inacircle60minutesand60secondswhatissospecialabout60/
The fact that the angles in a triangle add up to 180 is a function of the 360 definition.
Had the circle been defined as 500 degrees, then the angles of a triangle would add up to 250
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