Quote:
Originally Posted by freebeard
Citation needed.
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here's a short list of 16 angular units.
https://en.wikipedia.org/wiki/Angle#Units
the grad is sometimes grade, "A kilometre was historically defined as a centi-grad of arc along a great circle of the Earth" so not a useful measurement for the majority of folks who don't have an earth sized protractor...
https://en.wikipedia.org/wiki/Gradian is the metric angle, i.e. centigrade, but the circle is divided by 400... I think I did one problem using gradians in my entire life.