egyptian art
Fresco from Thutmosis' tomb
the navel (belly button) represents the mean of the golden ratio:
The nevel is positioned such that the ratio of the short half to the long half is equal to the ratio of the long half to the whole.
From feet to navel= 1
From feet to head= 1,618
In this case the ratio is 1,580665 (close to 1,618)
Middle Ages
A GOLDEN RECTANGLE IN SOME WORKS
The Golden rectangle has been known since antiquity as one having a pleasing shape, and is frequently found in art and architecture as a rectangular shape that seems 'right' to the eye.
Can we find a Golden Rectangle in art? Did artists use it?
Some students of the Istituto Magistrale
“A.Veronese” of Montebelluna
research where we can find the Golden Ratio in art.
These are the study results:

Duccio di Boninsegna: the Madonna Rucellai 1285
9,53:5,8=1,63
15,3:9,5=1,61

The last supper, 1063 - San Michele Arcangelo Basilica - Sant'Angelo in Formis
Renaissance
Domenico Veneziano
The Madonna and Child with Saints, 1445
Masaccio
Trinity, fresco in the Santa Maria Novella in Florence 1426-1428
Madonna and Child, 1426
Piero della Francesca
Flagellation, approx.1453
Madonna and Child with Saints (Montefeltro or Brera altarpiece), 1475
Sandro Botticelli
The Birth of Venus, 1485
Pimavera, 1482

Leonardo da Vinci
The Last Supper, 1495-1497
Drawing
Raffaello Sanzio
Spozalizio (The Engagement of Virgin Mary), 1504
The Transfiguration, 1518-20
Giorgione
Madonna and Child Enthroned between St Francis and St Liberalis, c. 1505
Tiziano Vecellio
Venus with Organist and Cupid, 1548