When were the 7 elements of art discovered?

The seven elements of art—line, shape, form, space, color, value, and texture—are foundational concepts in art that have been recognized and utilized for centuries. While there isn't a specific date for their "discovery," these elements have been articulated and analyzed by artists and theorists from ancient times through the Renaissance and into modern art. The formalization of these elements as a cohesive set primarily emerged in the 20th century, particularly in art education and criticism.