If a straight line touch a circle, and from the point of contact there be drawn across in the circle a straight line cutting the circle, the angles which it makes with the tangent will be equal to the angles in the alternate segments of the circle.
— Euclid Ancient

Father of geometry

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Details

Context

Theorem 32, Book III of 'Elements'

Date / Period

c. 300 BCE

Category

Strange & Unusual

Source

https://en.wikipedia.org/wiki/Tangent-secant_theorem

Verification

Unverifiable

Explanation

Found in 1 providers: grok

Method

Cross Reference

Sources Checked

1 source

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