What is units of angle?

An angle is a measurement of the amount of rotation between two intersecting lines or planes. The most common units of angle are degrees and radians.

Degrees: A degree is a unit of angle measurement that represents 1/360th of a full rotation. A full rotation is equal to 360 degrees. A right angle is equal to 90 degrees while a straight angle is equal to 180 degrees. Degrees are commonly used in everyday situations, such as measuring angles in geometry and navigation.

Radians: A radian is a unit of angle measurement that is based on the radius of a circle. One radian is equal to the angle subtended by an arc of a circle with an arc length equal to the radius of the circle. A full circle is equal to 2π radians. Radians are commonly used in higher-level mathematics and physics.

Gradians: Gradians or grades are another unit of measurement for angles. One gradian is equal to 1/400th of a full rotation. It is rarely used outside of specialized fields such as surveying, engineering, and artillery.