"90 Grad" is a term that refers to a specific angle measurement in geometry, representing a right angle. It is commonly used in various fields, including architecture, engineering, and design, to ensure structures and objects are aligned correctly. A 90-degree angle is formed when two lines meet at a perpendicular intersection, creating a square corner. In everyday life, "90 Grad" can be observed in many places, such as the corners of rooms, the edges of books, and the design of furniture. Understanding this angle is essential for creating balanced and functional spaces, making it a fundamental concept in both mathematics and practical applications.