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Chord (geometry) - Wikipedia, the free encyclopedia
A chord of a curve is a geometric line segment whose endpoints both lie on the curve. A secant or a secant line is the line extension of a chord.
chord (geometry)
In geometry, a straight line joining any two points on a curve
Chord -- from Wolfram MathWorld
In plane geometry, a chord is the line segment joining two points on a curve. The term is often used to describe a line segment whose ends lie on a circle. The term is also used in ...

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Chord (geometry)

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Chord (geometry), a line segment whose endpoints lie on a curve or on a circle. A chord that passes through the center of a circle is called a diameter. The diameter of a circle is the longest chord possible for that circle.