Last Updated：2025/12/06

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(geometry) A 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.

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Thales's theorem

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Source Word

Thales's theorem

Proper noun

(geometry) A 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.

Japanese Meaning

(幾何学) 円の上にある互いに異なる3点 A, B, C において、もし線分ACが直径ならば、角ABCは直角であるという定理。

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During the geometry lecture, the professor invoked Thales's theorem to show that when A, B, and C lie on a circle and AC is a diameter, angle ABC is a right angle.

Google Translation / DeepL Translation

幾何学の講義で、教授はタレスの定理を用いて、A、B、Cが円周上にありACが直径であるとき、角ABCが直角になることを示した。

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(geometry) A 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.

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Thales's theorem

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Thales's theorem

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