Geometry

Geometry (from the Ancient Greek: γεωμετρία; geo- "earth", -metron "measurement") is a branch of mathematics concerned with questions of shape, size, relative position of figures, and the properties of space. A mathematician who works in the field of geometry is called a geometer.

Geometry arose independently in a number of early cultures as a practical way for dealing with lengths, areas, and volumes. Geometry began to see elements of formal mathematical science emerging in the West as early as the 6th century BC. By the 3rd century BC, geometry was put into an axiomatic form by Euclid, whose
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Flatland: A Romance of Many Dimensions
The Greedy Triangle (Brainy Day Books)
Euclid's Elements
Sir Cumference and the First Round Table: A Math Adventure (Sir Cumference, #1)
Geometry and the Imagination
Geometry Revisited
Euclid's Window: The Story of Geometry from Parallel Lines to Hyperspace
The First Six Books of the Elements of Euclid
The Fractal Geometry of Nature
Sacred Geometry: Philosophy and Practice
Introduction to Geometry (Wiley Classics Library)
Geometry: A Comprehensive Course (Dover Books on Mathematics)
Sacred Geometry (Wooden Books, 35)
Euclidean & Non-Euclidean Geometries: Development and History
Geometry: Euclid and Beyond (Undergraduate Texts in Mathematics)

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In the pentagram, the Pythagoreans found all proportions well-known in antiquity: arithmetic, geometric, harmonic, and also the well-known golden proportion, or the golden ratio. ... Probably owing to the perfect form and the wealth of mathematical forms, the pentagram was chosen by the Pythagoreans as their secret symbol and a symbol of health. - Alexander Voloshinov [As quoted in Stakhov]
Alexey Stakhov, MATHEMATICS OF HARMONY: FROM EUCLID TO CONTEMPORARY MATHEMATICS AND COMPUTER SCIENCE

Isaac Asimov
A circle has no end.
Isaac Asimov, Second Foundation

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