AB is common chord in the given both circles Also, circles are congruent So, &ang;APB = &ang;AQB Now, in triangle BPQ &ang;APB = &ang;AQB BQ = BP (Angles opposite to equal sides are equal)

Q. 94.4( 44 Votes )

Two congruent cir

Class 9th NCERT - Mathematics 10. Circles

Answer :

AB is common chord in the given both circles

Also, circles are congruent

So,

∠APB = ∠AQB

Now, in triangle BPQ

∠APB = ∠AQB

BQ = BP (Angles opposite to equal sides are equal)

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