euclidean geometry

noun

variants often Euclidean geometry

1

: geometry based on Euclid's axioms

2

: the geometry of a euclidean space

Examples of euclidean geometry in a Sentence

Recent Examples on the Web

The general idea is that there are truths that can never formally be proved, as long as these truths are within a formal system, such as basic arithmetic or Euclidean geometry. — Theodore McDarrah, Forbes, 14 Jan. 2025

By including those points, projective geometry could be merged with Euclidean geometry in a way that was consistent for both systems. — Richard Jensen, Scientific American, 28 Apr. 2025

Teorema, which in English means theorem, also evokes the Pythagorean theorem of Euclidean geometry — angular shapes are very much at the heart of this new collection. — Sofia Celeste, WWD, 3 Sep. 2019

Her grammar consisted of triangles, the razor-blade shape, and rhombuses, sometimes in which quadrilaterals—a color-rich, playful visualization of Euclidean geometry—jostled with figuration. — Percy Zvomuya, Artforum, 1 June 2025

Unlike navigating on a flat map using Euclidean geometry, aeronautical navigation requires solving complex problems by calculating position and plotting courses on a model of the Earth as an ellipsoid, or a sphere. — Natasha Gural, Forbes.com, 8 Sep. 2025

Word History

First Known Use

circa 1865, in the meaning defined at sense 1

Rhymes for euclidean geometry

• interferometry
• spectrophotometry
• stoichiometry
• anthropometry
• audiometry
• densitometry
• radiometry
• sociometry
• trigonometry
• cytometry
• manometry
• morphometry