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 an Ellipse

A chord of an ellipse is a straight line segment whose endpoints are on the perimeter of the ellipse.

In the diagram above, the line $AB$ is a chord.


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

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

In the diagram above, the lines $AB$ and $C$ are chords.


Chord of a general Curve

Definition:Chord of Curve


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


Also see

  • Results about chords can be found here.


Sources