what additional congruency statement is needed to prove △ABD ≅ △CBD by the SAS congruence postulate?

A. BA ≅ CB
B. AB ≅ BC
C. AD ≅ CD
D. AD ≅ DC

what additional congruency statement is needed to prove ABD CBD by the SAS congruence postulate A BA CB B AB BC C AD CD D AD DC class=