Answer: c) SAS Postulate
Step-by-step explanation:
DP = PC Sides are congruent
∠ADP ≡ ∠BCP Angles are congruent (angles are between the sides)
AD = BC Sides are congruent
To finish the proof, we can state that ΔADP ≡ ΔBCP by the Side-Angle-Side (SAS) Postulate
