3. ΔEFG ≅ ΔYXZ
ΔEFG ≅ ΔYXZ is true if m∠E = m∠Y and m∠F = m∠X.
The above angles are corresponding angles, and they are also congruent angles.
This implies that:
The triangles are similar (not congruent) by AA postulate.
So, we have: ΔEFG ≅ ΔYXZ
Hence, the true statement is 3. ΔEFG ≅ ΔYXZ