The Impossible Triangle, also known as the Penrose Triangle, is an optical illusion and an example of an impossible object. It appears to be a three-dimensional triangular shape, but it cannot exist in real life due to its contradictory geometry. The triangle's design creates the illusion of three straight edges that connect in a continuous loop, defying the laws of Euclidean geometry. This intriguing figure was first created by the British mathematician Roger Penrose in the 1950s. It has since become a popular subject in art and design, often used to challenge perceptions of reality. The Impossible Triangle serves as a reminder of how our brains can be tricked by visual stimuli.