Question

Proof
Given: Angle APC=Angle BPD
Prove: Angle 3 is congruent to Angle 1

1. Statement: Angle APC=Angle BPD
Reason: ?

2. Statement: Angle APC=Angle 1+Angle 2
Reason: ?

3. Statement: ?
Reasons: Angle Addition Postulate

4. Statement: Angle 1+Angle 2=Angle 2+Angle 3
Reasons: ?

5. Statement: ?
Reasons: ?

6. Statement: Angle 3=Angle 1
Reasons: ?

7. Statement: Angle 3 is congruent to Angle 1
Reasons: ?