At What Angle Of Attack Will An Airplane Stall?

Though stalls are a well-known aviation term, they are frequently misunderstood. Stalls are a foundational learning maneuver for student pilots and are practiced annually throughout an aviation career. A stall is an exceedance of the critical angle of attack, which will be the article's focus. There are two questions to address: What is a stall, and at what angle of attack do planes stall?