Definition:Chord

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Definition

Chord of a Circle

Circle.png


A chord of a circle is a straight line segment whose endpoints are on the circumference of the circle.

In the diagram above, the lines $CD$ and $EF$ are both chords.


Chord of a Polygon

A chord of a polygon $P$ is a straight line connecting two non-adjacent vertices of $P$:

ChordOfPolygon.png

In the above diagram, $DF$ is a chord of polygon $ABCDEFG$.


Chord of a Parabola

Definition:Chord of Parabola

Chord of a general Curve

Definition:Chord of Curve


There are other sorts of chords, still to be documented.


Sources