The painting School of Athens by Raphael uses the linear perspective technique. What characteristic does the painting contain?

Perspective is a linear system of spatial alignment which creates an illusion of depth on a two-dimensional flat surface (or on a shallow three-dimensional surface such as a relief carving). Often called Linear Perspective (geometric, mathematical or optical perspective), this system is based on how the human eye sees the world: that is, (1) objects which are closer appear larger, while more distant objects appear smaller;