Answer:
They are congruent by AAS theorem.
Explanation:
From the figure, both triangle have a common side which is side VY.
Also, the figure is saying that angle YVW and angle ZVY are congruent. Additionally, angles YWV and VZY are congruent.
So, we have the congruence between two pairs corresponding sides and one pair of corresponding sides.
Therefore, we can deduct that
by Angle-Angle-Side Theorem (AAS).
The AAS is not a postulate, is a theorem which is demonstrated from the initial postulates of congruence.
This means the right answer is the second choice.