Equal chords of congruent circles subtend equal angles at the centre.

Recall that two circles are congruent if they have the same radil.Prove that equal chords of congruent circles subtend equal angles at their centres.

Prove that if chords of congruent circles subtend equal angles at their centres,then the chords are equal.

Theorem 10.1 : Equal chords of a circle subtend equal angles at the centre

Prove that equal chords of a circle subtend equal angles at the centre.

Theorem:-1If two arcs of a circle are congruent; the corresponding chord are equal and Equal chords of a circle substends equal angles at the centre.

Equal chords of a circle subtend equal angles at the centre.

Equal chord of circle subtends equal angle on centre.

prove that the line joining the mid-point of two equal chords of a circle subtends equal angles with the chord.

What is the length of the chord of a unit circle which subtends an angle at the centre ?

Prove that the line of centres of two intersecting circles subtends equal angles at the two points of intersection