Prove that equal chords of congruent circles subtend equal angles at their centre.

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

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

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

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

Equal chords of congruent circles are equidistant from the corresponding centres.

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

Prove that the line joining centres of two interesting circles subtends equal angles at the two points of intersection.

Let alpha chord of a circle be that chord of the circle which subtends an angle alpha at the center. If x+y=1 is a chord of x^(2)+y^(2)=1 , then alpha is equal to

r : Two chords of a circle subtend equal angles at centre if and only if they are equal. Statement r can be interpreted as

Find the differnce of the areas of two segments of a circle formed by a chord of length 5cm subtending an angle of 90^(@) at the centre.