Question

pl solve this questions

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Answer 1

Answer:

To prove that ΔABD≅ΔCDB

    DB=DB(Common)

    AB=CD(given because they are ║)

    AD=CB(          "                )

    ∠ADB=∠CDB( vertically opposite angles)

     ΔADB≅ΔCDB( By SAS rule)

           ∠A=∠C (CPCT)

             Hence proved.........

           I hope this answer helps you .