Thales's theorem

Meanings

proper noun

geometryA theorem stating that if A, B, and C are distinct points on a circle where the line AC is a diameter, the angle ABC is a right angle.
geometrySynonym of intercept theorem.
Synonyms: intercept theorem

proper nounSynonym of intercept theorem.

Similar

Also see

Generally attributed to Thales of Miletus.

Finnish Thaleen lause

Cite this entry

APA

Thales's theorem. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Thales's%20theorem

MLA

“Thales's theorem.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Thales's%20theorem. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Thales's theorem,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Thales's%20theorem.