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Chords AB andCD of a circle with centre ...

Chords AB andCD of a circle with centre O are congruent. If m(arc AXB) `= 120^(@)` then what is the m(arc( CYD).

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chord `AB ~=` chord CD …..(given )
`m(arc AXB_ = m(arc CYD)`
.....(Arcs corresponding to the congruent chords are congruent)
m ( arc CYD ) = `120^(@)`
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