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. All angles inscribed in a circle and subtended by the same chord are equal.
A line segment connecting two points on a curve.
Example: the line segment connecting two points on a circle's circumference is a chord.
When the chord passes through the center of a circle it is called the diameter.
