Perspective is an art technique used to represent three-dimensional space on a two-dimensional surface. It creates an illusion of depth and space by reducing or distorting what is seen by the eye. There are different types of perspective including linear, atmospheric, and isometric perspective. Linear perspective uses vanishing points and converging lines, atmospheric perspective uses color and shading, while isometric perspective manipulates scale and placement. Perspective is a fundamental technique in art and helps bring a work to life by creating a convincing sense of three-dimensional space.