1. Angle A and Angel C are rt. Angles

2. Triangle BAD and Triangle BCD are rt. Triangles

3. Line AB is congruent to Line CB

4.Line AD is congruent to Line CD

5. Triangle BAD is congruent toBCD

6.Triangle DAB is congruent to DCB

Reasons

1.Given

2.Given

3. Reflexive Property

4. Reflexive Property

5. HL

6. Corr. parts of congruent triangles are congruent.