Tau , by roman opalka , 1965 , abstract , Conceptual Art style , Beige
unanswerable
 a painting. The painting is made of cardboard. The cardboard is light brown in color. There are three lines painted on the cardboard in different directions. The lines are stitched on the top and bottom of the cardboard. There is some visible brush strokes in the cardboard as well. The paint is chipping away at the edges.