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Three-Chord Lemma


ThreeChordLemma

The three-chord lemma states that in the figure above,

 l_1+l_2=2lcostheta.

See also

Chord

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References

Price, H. E. "The Three-Chord Lemma." The Mathematics Teacher 87, 743, 1994.

Referenced on Wolfram|Alpha

Three-Chord Lemma

Cite this as:

Weisstein, Eric W. "Three-Chord Lemma." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Three-ChordLemma.html

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