Question

HELP WITH QUADRILATERAL QUESTION?? PLEASE XX

Answer 1

Answer:

From triangleADB AND TEIANGLE CDB we get,

AB=BC[Given]

AD=DC[Given]

AD=DA[Common arm]

So triangle ADB is congruent to triangle CDB by SSS congruence criterion[Proved]

Answer 2

WE USE SIDE-SIDE-SIDE CONGRUENT RULE HERE.....°^°

$in \: triangle \: abd \: and \: bcd \\ ad = cd.......(given) \\ ab = bc.......(given) \\ bd = bd.......(common \: side) \\ so \: abd \: is \: congruent \: to \: cdb \: by \: \\ side - side - side \: rule$