Central Angles and Arcs
Chord-Central Angles Conjecture: If two chords in a circle are congruent, then they determine two central angles that are congruent.
Chord-Arcs Conjecture: If two chords in a circle are congruent, then their intercepted arcs are congruent.
Perpendicular to a Chord Conjecture: The perpendicular from the center of a circle to a chord is the bisector of the chord.
Chord Distance to Center Conjecture: Two congruent chords in a circle are equidistant from the center of the circle.
Perpendicular Bisector of a Chord Conjecture: The perpendicular bisector of a chord passes through the center of a circle.














