How many degrees are there in a right angle?

A right angle is defined as an angle that measures exactly 90 degrees. This is a fundamental concept in geometry, where various types of angles are categorized based on their measures. Angles less than 90 degrees are known as acute angles, while those greater than 90 degrees but less than 180 degrees are termed obtuse angles. A straight angle measures 180 degrees, which is formed when the two rays of the angle point in exactly opposite directions.

Understanding that a right angle specifically measures 90 degrees is essential for various applications in mathematics and fields such as engineering and architecture, where precise angles are crucial for constructing structures and solving geometric problems.