a straight line with both endpoints lying on an arc or a circle
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A straight line connecting two points on the circumference of a circle
A "chord" in geometry is the line connecting two points on a circle. If you think if a pie slice, the chord is the outer crust.
Name a chord congruent to chord ZT.
If radius of a circle intersects a chord then it bisects the chord only if radius is perpendicular to the chord.
The radius of the circle that is perpendicular to a chord intersects the chord at its midpoint, so it is said to bisect the chord.
because the chord can be determine by the diameter and the diameter can be determine by the chord.