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