3.1 Circles II June 14, 2018June 21, 2017 by 3.1 Circles II (A) Properties of Circles Involving Symmetry, Chords and Arcs (B) Identify the Properties of Chords (1) A radius that is perpendicular to a chord divides the chord into two equal parts. (C) Properties of Angles in Circles (1) (2) (3) (4) (5)