Answer:
The correct option is 1.
Step-by-step explanation:
Statement 1: AB is parallel to DC and AD is parallel to BC.
Reason: Definition of parallelogram
Statement 2: ∠1 = ∠2, ∠3 = ∠ 4.
Reason: If two parallel lines are cut by a transversal then the alternate interior angles are congruent.
Statement 3: BD = BD.
Reason: Reflexive Property.
Statement 4: ΔADB≅ΔCBD.
Reason: If two angles and the included side of a triangle are congruent to the corresponding angles and side of another triangle then the triangles are congruent by ASA postulate.
Statement 5: AB = DC, AD = BC.
Reason: Corresponding parts of congruent triangles are congruent.
The missing information for reason 2 in the chart is alternate interior angles .
Therefore the correct option is 1.
