Under the subject of many paintings lies a simple shape that holds the arrangement together. Squint, and the figures and objects often fall into a triangle, a diagonal, an S-curve, a circle, or bands of horizontals or verticals.
| Structure | Often feels | Example |
|---|---|---|
| Triangle (pyramid) | stable, solid | Christ forms a triangle at the center of Leonardo's Last Supper |
| Diagonal | energetic, moving | the rearing horse and pointing arm in David's Napoleon Crossing the Alps (1801) |
| S-curve | graceful, winding, leads into depth | a river or path winding back into the distance |
| Circle | enclosed, unified | figures gathered in a ring |
| Horizontals | calm, spread out | the flat field and the low line of bent figures in Millet's The Gleaners (1857) |
| Verticals | upright, formal | rows of columns or trees |
Key idea
Look past the subject to the shape of the arrangement: triangle, diagonal, S-curve, circle, horizontals or verticals. The structure sets much of the mood.
Why it works
A triangle with a wide base looks like it cannot tip over, so it feels stable. A diagonal looks like something falling or rising, so it feels active. An S-curve leads the eye gently back and forth into the distance. We read these shapes before we read the details.
Worked example: The Oath of the Horatii
In David's The Oath of the Horatii (1784), three arches in the background divide the scene into three parts: three brothers at the left, their father in the center holding up swords, and grieving women at the right. What structures hold it together?
- Three arches set up a calm, regular rhythm of verticals and divide the picture into three zones.
- The brothers' outstretched arms and braced legs make strong diagonals toward the swords.
- The father's swords sit at the center, where the diagonals meet.
Answer: A three-part division by the arches, with strong diagonals meeting at the center.
Common mistake
Looking only at the subject and missing the shape of the whole. Try squinting, or tracing the main masses with your finger in the air. If your finger draws a triangle or a slash, that is the structure.