Proof: By Euclid
(related to Corollary: 3.01: Bisected Chord of a Circle Passes the Center)
This follows immediately from the proof of the Prop 3.01.
Adapted from CC BY-SA 3.0 Sources:
- Callahan, Daniel: "Euclid’s 'Elements' Redux" 2014
Adapted from (Public Domain)
- Casey, John: "The First Six Books of the Elements of Euclid"