Question

plz answer this question to easy way.

Answer 1

AC = AD (given)

angle CAB = angle BAD (as angle A bisects both angles)

AB=AB (common)

hence, triangle ABC is congruent to triangle ABD (SAS)

as both the triangles are  congruent then BD = BC 




i hope this will help you

Answer 2

hчч fríєnd
hєrє íѕ чσur αnѕwєr...........

gívєn: ín quαdrílαtєrαl αвcd
αc=вc αnd αв вíѕєctѕ αnglє α ..

tσ prσvє : trí αвc =~ trí αвd

prσσf: ín trí. αвc αnd trí αвd
αc=αd ( gívєn)

αnglє вαc = αnglє вαd. (αв вíѕєctѕ αnglє α )

αв=αв. (cσmmσn)

вч ѕαѕ cσngruєncч

trí.αвc= trí. αвd .....

thuѕ , вc= вd (вч cpct)

hσpє ít hєlp чσu!!!!!!