Sources (left to right, top to bottom):
1: Daniel Jacobsohn, Golden Rectangle series. More information on the Golden Rectangle and the Golden Ratio 2: Alexander Rodchenko, Spatial Construction no. 12, c. 1920, source: MOMA 3: Daniel Jacobsohn, Folks Things, 2000, source: Private Collection 4: Brandy Agerbeck, Portfolio Sample (Lemongrass Soup, detail), source: Twenty-Two. Reproduced with permission.