◀ ▲ ▶Branches / Geometry / Elements-euclid / Book--4-inscription-and-circumscription / Proof: By Euclid

Proof: By Euclid

(related to Corollary: 4.15: Side of Hexagon Inscribed in a Circle Equals the Radius of that Circle)

This follows immediately from the proof of Prop. 4.15, the definition of a tangent and circumscribing about circle.

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References

Adapted from CC BY-SA 3.0 Sources:

1. Callahan, Daniel: "Euclid’s 'Elements' Redux" 2014

Adapted from (Public Domain)

1. Casey, John: "The First Six Books of the Elements of Euclid"