Answer:
Step-by-step explanation:
You really have enough information already
As ASA stands for Angle-Side-Angle
The first angle is the right angle at the bottom
The sides BD and CD are congruent by evidence of the hash marks.
I'm fairly certain that they want us to say we need
∠Β ≅ ∠C for the answer
However we don't need it.
Once they told us that BD = CD that automatically told us that the perpendicular line bisects A and we have ASA congruency via the right angle, the common perpendicular side and the bisected angle A