How are angles commonly measured?

Angles are commonly measured in degrees and in radians, both of which are widely used in various fields such as mathematics, engineering, and physics. Degrees can be further divided into minutes and seconds, allowing for precise measurements. For instance, one degree is divided into 60 minutes, and each minute is divided into 60 seconds. Decimal degrees also serve as a useful format, particularly in fields such as navigation and computer graphics, where decimal representation can simplify calculations.

Due to their versatility and the fact that they provide a clear system for denoting partial angles, degrees (including minutes and seconds) are often the preferred method for measuring angles in everyday contexts. Radians, while prevalent in more advanced mathematical contexts, represent a different system based on the radius of a circle, and are used primarily in calculus and other advanced applications.

The other options do not encompass the standard units commonly utilized for measuring angles. Percentages and fractions do not represent angular measurements in conventional practices, making them less relevant in the context of angle measurement.