A right angle is an angle that measures exactly 90 degrees. It is one of the most important angles in geometry and is often represented by a small square in the corner of the angle. Right angles are commonly found in everyday objects, such as the corners of a square or rectangle, and are essential in construction and design. Right angles are used to create perpendicular lines, which meet at a 90-degree angle. This property is crucial in various fields, including architecture, engineering, and carpentry. Understanding right angles helps in measuring and creating accurate shapes and structures.