a) Suppose that you know the radius of a circle and the length of a chord of a circle that is not a diameter. Can you find the distance from the center of the circle to the chord? Explain
b) Suppose that two chords of a circle are the same distance from the center of the circle. Must the chord be congruent? Why or why not?
b) Suppose that two chords of a circle are the same distance from the center of the circle. Must the chord be congruent? Why or why not?

Distance D ( Normal from center to the chord ) Isosceles triangle , side =R , base = chord/2
R^2= D^2 +(ch/2)^2
D^2 = R^2 (ch/2)^2
b) If D is equal , chord must be congruent
R^2= D^2 +(ch/2)^2
D^2 = R^2 (ch/2)^2
b) If D is equal , chord must be congruent