How many degrees are in a right angle?

A right angle is defined as an angle that measures exactly 90 degrees. In geometry, angles are typically categorized based on their degree measurement, and a right angle is one of the fundamental types, alongside acute angles (less than 90 degrees) and obtuse angles (greater than 90 degrees but less than 180 degrees).

The concept of a right angle is crucial in various aspects of mathematics and geometry, particularly in the study of triangles, as right angles are a key component of right triangles, which follow the Pythagorean theorem. Additionally, right angles are used as a basis for constructing perpendicular lines, which are essential in fields like engineering and architecture.

An angle measuring 180 degrees represents a straight angle, while an angle measuring 270 degrees would create a reflex angle, which is greater than 180 degrees. A full revolution or complete rotation around a point measures 360 degrees. Therefore, the measurement of 90 degrees distinctly identifies it as a right angle.