Question

Two chords AB and CD are congruent.m(arc AB)=110° then the central angle of chord CD is

Answer 1

AB congruent CD...Given

Therefore m(arc CD ) = 110°...Property of sum of measure of arcs.

Answer 2

We must recall that:

Angles formed at the center by congruent chords are equal.

Parallel lines are lines in a plane that are always the same distance apart. Parallel lines never intersect.

Therefore,

∠$AOB=$∠$COD=110$°