Pablo Picasso, ‘Head of a Woman’ 1924
Pablo Picasso
Head of a Woman 1924
© Succession Picasso/DACS 2021
Jasper Johns, ‘Dancers on a Plane’ 1980–1
Jasper Johns
Dancers on a Plane 1980–1
© Jasper Johns
Dame Barbara Hepworth, ‘Ball, Plane and Hole’ 1936
Dame Barbara Hepworth
Ball, Plane and Hole 1936
© Bowness

The flat patches seen in cubist paintings are often referred to as planes, and geometric abstract artists refer frequently to planes in discussing their work.