A chord is a line segment whose endpoints lie on a circle. A secant is a line (or line segment) that intersects a circle in two places, endpoints NOT on the circle.
A diameter is a segment that passes through the center of a circle and has both endpoints on the circle.
A chord
Chord
This segment would be the radius of a circle.
An arc is a part of a circle that is defined by its endpoints. It is a segment of the circumference of the circle.
The correct term for a line segment with both endpoints on a circle is a chord. The diameter of a circle is also a chord.
They are chords.
A Ray
chord
That's a "diameter" of the circle.
radius