Sacred Geometry
Sacred geometry is all around us, in nature, in art and architecture, in music. Divine proportion and patterns. Here are images from western and Buddhist art and architecture, from physics and cymatics, from nature, from planetary cycles ...
Move

The Buddha Śākyamuni (Wangdrak) with structural grid (tigse)
(Jackson, David & Janice. 1984. Tibetan thangka painting: methods and materials. Snow Lion Publications, Ithaca, NY) 
Proportional grid of standing vs seated Buddha
(Jackson, David & Janice. 1984. Tibetan thangka painting: methods and materials. Snow Lion Publications, Ithaca, NY) 
Albrecht Durer's human canon is entirely composed of proportions derived from the three unique divisions of Unity into the Arithmetic, Harmonic and Geometric Proportions
(Lawlor, Robert. 1982. Sacred Geometry. Thames & Hudson, London) 
Sacred geometry proportion in Hindu classical dance
(Lawlor, Robert. 1982. Sacred Geometry. Thames & Hudson, London) 
The ubiquitous 1:√2 relationship is fundamental to the form and proportions of the honey bee
(Lawlor, Robert. 1982. Sacred Geometry. Thames & Hudson, London) 
Invariant geometric and geodetic relationships are expressed in human biometrics
(Lawlor, Robert. 1982. Sacred Geometry. Thames & Hudson, London) 
Kepler's version of the solar system was as one Platonic solid within another, the radii of the intervening concentric spheres relating to the orbits of the planets
(Lawlor, Robert. 1982. Sacred Geometry. Thames & Hudson, London) 
Mercury's orbit as seen from Earth (from Flammarion's Astronomie Populaire)

A (simplified) epicycle model. Mercury moves along a small circle (epicycle) of radius 0.38 (MercurySun distance in Astronomical Units) with period 88 days (Mercurian year), while this epicycle moves along a larger circle (deferent) of radius 1AU, with period 1 Earth year. After 1 year.

A (simplified) epicycle model. Mercury moves along a small circle (epicycle) of radius 0.38 (MercurySun distance in Astronomical Units) with period 88 days (Mercurian year), while this epicycle moves along a larger circle (deferent) of radius 1AU, with period 1 Earth year. After 7 years.

Vibrational image of the Seed Sound, Om
(Lawlor, Robert. 1982. Sacred Geometry. Thames & Hudson, London) 
In this geometric analysis of the Parthenon by Tons Brunés from his book The Secrets of Ancient Geometry, it can be seen that the architecture is governed by the relationship between side and diagonal in a series of squares
(Lawlor, Robert. 1982. Sacred Geometry. Thames & Hudson, London) 
A planetary system based on the musical proportion, 6, 8, 9, 12, of the arithmetic mean and the harmonic mean between the geometic ratios of 6 and 12, along with the other tones of the Pythagorean diatonic (major) scale
(Lawlor, Robert. 1982. Sacred Geometry. Thames & Hudson, London) 
Sound frequencies in this experiment cause random particles to assume geometric patterns
(Lawlor, Robert. 1982. Sacred Geometry. Thames & Hudson, London) 
Geometric symmetries are generated from electronic beam frequency interference patterns. The sevenfold figure arises out of the circle and returns to it
(Lawlor, Robert. 1982. Sacred Geometry. Thames & Hudson, London) 
Geometric symmetries are generated from electronic beam frequency interference patterns. The sevenfold figure arises out of the circle and returns to it
(Lawlor, Robert. 1982. Sacred Geometry. Thames & Hudson, London) 
Geometric symmetries are generated from electronic beam frequency interference patterns. The sevenfold figure arises out of the circle and returns to it
(Lawlor, Robert. 1982. Sacred Geometry. Thames & Hudson, London) 
Geometric symmetries are generated from electronic beam frequency interference patterns. The sevenfold figure arises out of the circle and returns to it
(Lawlor, Robert. 1982. Sacred Geometry. Thames & Hudson, London) 
Geometric symmetries are generated from electronic beam frequency interference patterns. The sevenfold figure arises out of the circle and returns to it
(Lawlor, Robert. 1982. Sacred Geometry. Thames & Hudson, London) 
Geometric symmetries are generated from electronic beam frequency interference patterns. The sevenfold figure arises out of the circle and returns to it
(Lawlor, Robert. 1982. Sacred Geometry. Thames & Hudson, London) 
Image from Cloud 9 – Scott "Gusty" Christensen

Image from Cloud 9 – Scott "Gusty" Christensen

The Sri Yantra. Visual depiction of Seed Sound, Om.

Tibetan Buddhist stupa
(Jackson, David & Janice. 1984. Tibetan thangka painting: methods and materials. Snow Lion Publications, Ithaca, NY) 
Vajrasattva in Yab/Yum (drawing by Glen Eddy)