Respuesta :

Kritu3

Answer:

Step-by-step explanation:

IN TRIANGLE ADB AND CDB

1 . < ADB = < DBC      ( BEING ALTERNATE ANGLE )

2 . DB = DB     ( COMMON SIDE )

3. <ABD = <BDC ( BEING ALTERNATE ANGLE )

4. △CDB ≅ΔADB    ( BY ASA AXIOM )

PROVED ..