Question 550878
       
 b. ... .   .d
 . .  .c  .
 a.....  .  .e
 
draw bca as one triangle and ecd as another triangle above how they are arranged.
Given,
BC ≅ EC and AC ≅ DC
For this type of problems try to draw a figure, then you will easily find the answers.
from the figure
∠BCA ≅ ∠ECD are vertical angles,Vertical angles are congruent.
 ΔBCA ≅ ΔECD are SAS
so, BA ≅ ED ( Corresponding parts of congruent triangles are congruent)