One of Morris's best-known Minimalist pieces, Untitled (L-Beams) lacks any texture, trace of the artist's hand or figural content that would otherwise distract the viewer from pure engagement with the arranged forms. The work is composed of three L-shaped forms identical in every way, but positioned differently - one lying on its side, another resting on two edges, and the third standing erect. The forms' configuration causes them to be perceived as varying in size and shape. Morris's concern with the experiential aspect of the piece is revealed in his use of polyhedrons - three-dimensional solids with flat faces and straight edges whose forms and shapes could be readily grasped by the viewer. It also underpinned his instructions that the work be arranged differently each time it was to be exhibited so that viewers would experience the work differently as well.