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Two circle with centres `A` and `B` intersect at `C` and `Ddot` Prove that `/_A C B=/_A D Bdot`

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Join`AC,AD,BC,BD and AB`
In `/_\ ACB and /_\ADB`
`AC=AD`(Radii of the same circle)
`BC=BD`(Radii of the same circle)
`AB=AB`(Common Circle)
`/_\ ACB = /_\ADB` (By SSS)
`/_A C B=/_A D B`
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