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Tangente

Geometry

Dive into the fascinating world of mathematics with our captivating articles, written by passionate experts. Whether you are a curious amateur or a seasoned mathematician, our articles cover a wide range of topics, from fundamental concepts to the latest discoveries, including practical applications and philosophical reflections.

Mathematical code - Sagrada Família: Gaudí's secret finally revealedPodcast
Maths and art

Mathematical code - Sagrada Família: Gaudí's secret finally revealed

A Barcelona mathematician discovers that the Sagrada Família is built on a 7.5-metre module and the proportions of the divisors of 12. Here's how.

L'équipe TangenteJul 13, 2026
Vedic mathematics: a history of ritual geometry and the Śulba SūtrasPodcast
Math History

Vedic mathematics: a history of ritual geometry and the Śulba Sūtras

Discover how Vedic rituals gave rise to some of the oldest geometric, arithmetic and algorithmic texts in human history.

Agathe KellerJun 8, 2026
Determining the qibla: spherical trigonometry and direction to MeccaPodcast
Applied Math

Determining the qibla: spherical trigonometry and direction to Mecca

Discover how Muslim tradition inspired elegant mathematical solutions for finding the direction of Mecca, combining spherical geometry and astronomy.

BENOIT RITTAUDJun 8, 2026
Gladys West: the mathematician who made GPS possiblePodcast
Famous figures

Gladys West: the mathematician who made GPS possible

A portrait of Gladys West, the African-American mathematician whose geodetic models enabled the development of modern GPS.

La rédaction de TangenteApr 30, 2026
Two locally identical yet different tori break 150 years of geometryPodcast
News

Two locally identical yet different tori break 150 years of geometry

Two tori plainly impossible to tell apart locally yet topologically distinct: a discovery that breaks a rule geometry has accepted for 150 years.

Martine BRILLEAUDApr 23, 2026
Euler–Cramer paradox: Are 9 points enough to define a cubic?Podcast
Maths and History

Euler–Cramer paradox: Are 9 points enough to define a cubic?

The Euler–Cramer paradox: If nine points seem sufficient to determine a cubic curve, how can two distinct cubics also pass through those same nine points?

Thierry JoffredoFeb 14, 2026
Gabriel Cramer and Cramer's rule in the 18th centuryPodcast
Maths and History

Gabriel Cramer and Cramer's rule in the 18th century

The appendix to Gabriel Cramer's Introduction à l’analyse des lignes courbes algébriques contains the famous rule for solving systems of linear equations and Bézout's theorem.

Thierry JoffredoFeb 14, 2026
Plotting algebraic curves in the 18th century: Newton’s and Cramer’s analytic methodsPodcast
History and Culture

Plotting algebraic curves in the 18th century: Newton’s and Cramer’s analytic methods

How did Gabriel Cramer plot algebraic curves in 1750? Discover Newton's analytical parallelogram and Cramer's analytical triangle.

Thierry JoffredoFeb 13, 2026