Question

The following is a 3-step proof. Complete the proof.

Given: 1 = 2

AP = BP

Answer 1

1)
`\angle 1=\angle 2`,
`AP=BP` (given)

2)
`\angle APD=\angle BPC` (vertical angles are equal)

3)
`\triangle ABD \cong \triangle BAC` (ASA)