ques.15 Share with your friends Share 0 Neha Sethi answered this Dear student From the given figure we can say that In △ABC and △DEF∠B=∠F Alternate interior angles-As AB∥FE and BF is their transversal∠C=∠D [given]AC=ED [Given]So, △ABC≅△EFD [By AAS]⇒AB=FE [By CPCT]and BC=DF [By CPCT]⇒BC-CD=FD-CD⇒BD=CF Regards 1 View Full Answer