180degrees
180degrees is a term used to denote a half-turn or reversal of direction, derived from the angular unit of measure called a degree. In geometry, an angle of 180 degrees is a straight angle, corresponding to a straight line. The phrase is used in everyday language to indicate a complete reversal of position or opinion.
In film, photography, and related disciplines, the 180-degree rule describes maintaining an imaginary axis of action
The string 180degrees or 180 Degrees is also used as a name or title by various organizations,
Etymology and usage note: the term combines the numeral 180 with the unit degree, reflecting its origins