An angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle. Angles are typically measured in degrees or radians.

An angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle. Angles are typically measured in degrees or radians. Here are some common types of angles: An acute angle* is an angle measuring less than 90^. A right angle* is an angle measuring exactly 90^. An obtuse angle* is an angle measuring greater than 90^ but less than 180^. A straight angle* is an angle measuring exactly 180^. A reflex angle* is an angle measuring greater than 180^ but less than 360^.