Which is true regarding chords and diameters of circles? Both chords and diameters have two endpoints on a circle. Diameters must intersect the center of a circle. Both chords and digmeters have two endpoints on a circle. Chords must intersect the center of a circle. Chords have two endpoints on a circle. Diameters have one endpoint on a circle and one at the center. Chords have one endpoint on a circle and one at the center. Diameters have two endpoints on a circle.