How many degrees are in a right angle?

A right angle is defined as an angle that measures exactly 90 degrees. This is a fundamental concept in geometry that applies to various shapes and figures, particularly in the context of right triangles and the coordinate plane.

In a right triangle, the angle opposite the hypotenuse is always a right angle, reinforcing the idea that this angle is precisely 90 degrees. Furthermore, in a full rotation of a circle, which measures 360 degrees, the right angle represents a quarter of that circle, illustrating its significance in both geometric constructions and measurements.

Understanding that a right angle consists of 90 degrees is crucial for solving many mathematical problems that involve angle relationships, trigonometry, and coordinate geometry. It serves as a foundational building block for more complex concepts and theorems in mathematics.