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 to preserve consistent screen direction. By restricting camera movement to one side of the axis, filmmakers and photographers help ensure that spatial relationships remain clear to the audience and prevent disorienting flips in perspective.

The string 180degrees or 180 Degrees is also used as a name or title by various organizations, brands, and media projects. Because it evokes a universal concept rather than a single entity, different groups may adopt it independently, leading to a variety of products, services, or works that carry the same or similar designation.

Etymology and usage note: the term combines the numeral 180 with the unit degree, reflecting its origins in angular measurement. Related concepts include the straight angle of 180 degrees and the broader idea of turning or reversing direction in mathematics, navigation, and everyday speech. See also: 180-degree rule; straight angle; turning angle.