Answer:
see below
Explanation:
In order to use ASA congruence, you need to show congruence of angles on either side of a congruent segment. (Angle - Side - Angle) Considering the left side of the figure, you have given that ∠B is congruent to its counterpart, side BC is congruent to its counterpart. So, you need to show the angle at C is congruent to its counterpart. That is, you must show ...
∠BCA ≅ ∠DCE