Artworks that foreground the precise rendering of lines, angles, and shapes. These works are dictated by the principles of Euclidean geometry, which favors straight lines and hard angles, often suggesting the use of tools like a straight-edge or compass. A focus on geometry was central to several abstract movements and tendencies of the 20th century, including Constructivism and Suprematism, which originated in Russia; Concrete Art (which was founded in Europe in the 1930s but quickly took hold in Latin America); and the predominantly American 1960s practices of hard-edged painting, post-painterly abstraction, and Minimalism.