Answer:
2. Statement:AB=CD and BC=AD

Reason: Given .
8. Statement:
and 
Step-by-step explanation:
Given
A quadrilateral ABCD is a parallelogram
and 
AB=CD and BC= AD
1. Statement: Quadrilateral ABCD is a parallelogram
Reason: Given
2. AB=CD and BC= AD ,
and 
Reason: Given
3. Draw AC is a transversal line that cuts two pairs of parallel lines AB and CD , BC and AD.
Reason: Drawing a line segment.
4.

Reason: Alternate interior angles theorem
5.

Reason: Congruent angles have equal measures.
6. AC= AC
Reason : Reflexive property of equality.
7. ASA criterion for congruence 
Reason : Angle-side_ Angle property of congruence
8.
and 
Reason : Corresponding sides of congruent triangles are congruent.