Rechthoek en een driehoek c. 1916

"Rechthoek en een driehoek" (Rectangle and a Triangle) is a work on paper by Dutch artist Reijer Stolk, created around 1916. It is a sketch of a geometrical composition, featuring a rectangle and a triangle inscribed within it, with mathematical calculations and notes written around the shapes. The work exemplifies Stolk's interest in exploring the relationship between geometry and art, a theme prevalent in early 20th-century art movements like De Stijl. This piece, currently housed in the Rijksmuseum, offers insight into Stolk's artistic process and his fascination with mathematical principles in art.