What Are The Properties Of CirclesTwo circles are congruent, if and only if they have equal radii.Two arcs of a circle are congruent if the angles subtended by them at the centre are equal.Two arcs subtend equal angles at the centre, if the arcs are congruent.If two arcs of a circle are congruent, their corresponding chords are equal.If two chords … [Read more...] about What Are The Properties Of Circles