other half of review-please help need by tomorrow morning

Question

3.Given line AD bisects vertex angle BAC

line AD perpendicular to line BC

Prove:triangle ADB is congruent to triangle ADC

Fill in reason for each Statement:

vertex angle BAD is congruent to vertex angle CAD

1.reason:

angle ADB, angle ADC right angles

2.reason:

vertex angle ADB is congruent to vertex angle ADC

3.reason:

vertex angle ADB is congruent to vertex angle ADC

4.reason:

triangle ADB is congruent to triangle ADC

5.reason:

Answer 1

Draw a diagram.

Steps 3 and 4 are identical. I think that step 4 should be AD ≅ AD.

Reasons:

1. Definition of angle bisector
2. Perpendicular lines form right angles
3. Any two right angles are congruent
4. Reflexive Property
5. Angle-Side-Angle