Respuesta :
Answer: SAS postulate will be use to prove  ΠABD â ÎCBD
Step-by-step explanation:
Here, In ÎABC line segment BD is the perpendicular bisector of line segment AC,
Therefore, BD â„ AC and, AD=DC
Thus, In triangles ABD and CBD,
ADâ DC Â Â ( given)
â ADBâ â CDB ( Right angles)
BDâ BD Â Â Â Â Â Â ( Reflexive)
Therefore, By SAS postulate of congruence,
Î ABD â ÎCBD.