Geometry

Geometry is the area of mathematics dealing with spatial relationships and the shapes of figures.

1. 1850 BC: Babylonians discovered the Pythagorean Theorum over 1,000 years before PythagorasUniversity of St. Andrews: Chronology for 30000BC to 500BC
2. Bees construct their hives of hexagonsCool Math for Kids: Geometry Links
3. Mobius Strip: Two dimensional surface with only one sideWolfram MathWorld: Möbius Strip
4. The sum of the angles of a triangle will always be 180 degreesWolfram MathWorld: Triangle Postulate

"... being perpetually charmed by his familiar siren, that is, by his geometry, he neglected to eat and drink and took no care of his person; that he was often carried by force to the baths, and when there he would trace geometrical figures in the ashes of the fire, and with his finger draws lines upon his body when it was anointed with oil, being in a state of great ecstasy and divinely possessed by his science."—Plutarch discussing ArchimedesUniversity of St. Andrews: Geometry Quotes

" There are some who, because the point is the limit and extreme of the line, the line of the plane, and the plane of the solid, think there must be real things of this sort."—AristotleGeometry Step by Step: Geometry Quotes

• McGill University: What is Geometric Group Theory?

• MathOpenReference: Pythagorean Theorem

• Rice University: Girard's Theorem

• The Straight Dope: Is Phi a Mystical Number as Claimed in The Da Vinci Code?

• Wolfram MathWorld: Carnot's Theorem

• MathPages.com: Ptolmey's Theorem

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