Question

pls ans immediately

Answer 1

AD=CF 1
Adding DC is equations 1
AD+DC=CF+DC
AC=DF
In triangles ABC and triangle DEF
AD=DF(proved)
angle C=angleD=90degree
BC=DE(given)
so ABC congruence DEF by (SAS rule)
AB=EF&
angle EFD=angleBAC by CPCT
but this is alternate interior angle
therefore ABllEF

Answer 2

In triangle ABC and DEF
AD=CF
AD+CD=CF+CD
AC=DF
Angle D=C=90 degree
CB=DE(given)
So triangle ABC congruent DEF
so angle BAC=DFE by CPCT
But these are alternate interior angle
So AB parallel to EF
And AB=EF by CPCT