Question

Please solve both the parts

Answer 1

therefore both triangle is similar to each other but if they are similar then they are congruent also therefore both triangle is congruent to each other and line ac and db are equal because they are parallel to each other also

Answer 2

AC and BD bisects at O

so, AO=BO. (1)

OC=OD. (2)

in tri, AOC and BOD,

AO=BO. from 1

OC=OD. from 2

o = o(angle) common

tri AOC congruent to BOD
AC = BD (by CPCT)