Question

Triangle ABC is an isosceles triangle with AB=AC. Side BA producedto D such that AD=AB. prove that angle BCD is right angle.

Answer 1

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Here's ur solution....hope this helps you ☺☺☺
see the attached pic.

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Answer 2

Hope this helps you . Pls Mark as brainliest if possible

Edit: in that pic it's angle acd+angle adc=y.